The August my daughter Nora left for Savannah, I made this crisp every weekend just to have the kitchen smell like her. She called home one Tuesday, homesick, and I described what I was doing — browning the butter, slicing the peaches, the sound of the topping hitting the fruit. “Save me some,” she said. I froze a dish for her next visit. It’s been the taste of late summer in my house ever since.

The short version: Juicy, jammy summer fruit under a crunchy, buttery oat topping — ready in under an hour.

I’ve made this for potlucks, for neighbors with new babies, and for quiet Tuesday nights when I need to remember that summer isn’t over yet. It’s the recipe my friends text me about the week after I bring it over.

At-A-Glance

Serves: 8 as a dessert (or 4 with leftovers for breakfast)
Hands-On Time: 20 min | Total Time: 55 min
Difficulty: Easy enough for a Tuesday
Cost per serving: ~$2.50
Calories: ~320 per serving
Dietary Notes: Can be made gluten-free with certified GF oats; naturally vegetarian

(Photo above: Overhead shot of the peach-blueberry crisp in a white square baking dish, the oat topping deeply golden with visible clumps, one corner cut out to reveal the bubbling jewel-toned fruit underneath, a scoop of vanilla ice cream melting into the warm filling, soft late afternoon light from the left hitting the ceramic dish.)

The Simple Trick That Makes This Crisp So Good

Golden-brown peach and blueberry crisp with brown butter crumb topping in a baking dish, bubbling around the edges

The thing that makes this crisp better than any other I’ve tried is the brown butter. Marta taught me that browning the butter before it meets the oats deepens everything — the fruit tastes fruitier, the topping toastier, and the whole kitchen fills with a warm, nutty smell that honest-to-goodness makes people walk into the kitchen saying “what is that?”

The other secret is cornstarch. Flour works in a pinch but it clouds the filling. Cornstarch lets the fruit shine through in all its jewel-toned glory and turns the juices into a syrupy jam instead of a watery puddle. That difference alone will make you never go back.

And the ratio — that’s the part I sweated over. Four parts peaches to two parts blueberries gives you enough sweet-tart balance that you don’t need to drown the dish in sugar. The fruit does what it’s supposed to do: taste like itself.

Ingredients Worth Talking About

4 cups peaches, sliced (about 4-5 medium peaches): Ripe but firm. Freestone peaches are my favorite — the pit releases cleanly and you’re not fighting with it. Smell the peach at the stem end. If it smells like a peach, it’s perfect for this.
2 cups fresh blueberries: I use whatever I picked up at the farmers’ market. Frozen works beautifully too — add them straight from the freezer, don’t thaw first. My kids love when I use frozen blueberries because the filling turns a gorgeous deep purple.
6 tbsp unsalted butter: This is the non-negotiable. Don’t skip browning it. It takes five minutes and changes the entire personality of this crisp.
1 cup old-fashioned rolled oats: Not quick oats. You want the ones that hold their shape and get shatteringly crisp where they peek out of the topping.
1/2 cup all-purpose flour: A heaping measuring cup is fine — this isn’t a precision bake.
1/2 cup packed brown sugar & 1/4 cup granulated sugar: Brown sugar in the topping for that deep molasses note, a little granulated in the fruit to draw out the juices without making it heavy.
1 tbsp cornstarch: The thickener. It’s the difference between a runny crisp and one you can serve with pride.
1/2 tsp cinnamon & 1/4 tsp nutmeg: Freshly grated if you have it — the pre-ground nutmeg is fine, but grate it fresh and you’ll never go back.
Squeeze of lemon juice: Just a little. It keeps the peaches from browning and wakes up the whole filling.

What You’ll Need in Your Kitchen

8×8 or 9×9 baking dish (or a 9-inch round pie dish — a shallow dish means more crunchy topping per bite)
A skillet for browning the butter (a light-colored skillet helps you see the color change)
Large mixing bowls (one for fruit, one for topping)
Sharp knife and cutting board
Measuring cups and spoons
A fork for mixing the topping (my fingers work better, honestly)

Making This Crisp, Start to Finish

This goes quickly, so I like to have everything measured and ready before I turn on the oven. Read through once, then dive in.

Heat the oven to 375°F and butter your baking dish. A little butter on the dish means nothing sticks and the edges get that caramelized crust that everyone fights over.

Brown the butter: In your skillet over medium heat, melt the butter. Swirl it occasionally as it foams and sputters. After about 3-4 minutes, the foam will settle and you’ll see little amber specks form at the bottom. The moment it smells like toasty hazelnuts, pour it into a bowl to cool slightly. 📸 Photo tip: Swirl the pan until the foam turns deep amber — like a smooth hazelnut shell. Take it off the heat the second you see that color.
Prep the fruit: Slice the peaches into 1/2-inch wedges. You don’t need to peel them — the skins soften as it bakes and add a beautiful pink tint to the filling. Toss the sliced peaches with the blueberries, granulated sugar, cornstarch, and lemon juice in a large bowl. 📸 Photo tip: The juices should start to look glossy and thick immediately — that’s the cornstarch doing its work.
Make the topping: In a separate bowl, whisk together the oats, flour, brown sugar, cinnamon, nutmeg, and a pinch of salt. Pour in the cooled brown butter and stir with a fork (or your hands) until clumps form. Squeeze a handful — if it holds together, it’s perfect. If it’s dry, add a tablespoon of melted butter or water.
Assemble the crisp: Pour the fruit into the prepared dish and spread it even. Sprinkle the topping over it in an even layer. Don’t press it down — you want those oats to stand up and get crunchy. I put the dish on a baking sheet to catch any drips. It saves me from scrubbing the oven later.
Bake: Bake for 35-40 minutes, until the fruit is bubbling at the edges and the topping is a deep golden brown. The juices should be thick and syrupy, not thin. 📸 Photo tip: Look for the fruit to be bubbling up through the topping in at least two or three places — that’s how you know it’s fully cooked.
Rest: Let the crisp rest for at least 15 minutes. I know it’s hard when the whole kitchen smells like this. But the filling needs time to set, and if you cut into it too soon, it runs everywhere. Trust me on this one.

How I Make This Ahead (Because We’re All Busy)

I make this crisp all summer long, and I’ve learned a few shortcuts that make weeknight dessert a reality instead of a dream. You can assemble the topping and the fruit separately, then combine and bake when you’re ready.

Fridge: Assemble the crisp (unbaked), cover tightly with foil, and refrigerate for up to 2 days. Bake straight from the fridge, adding 5-10 minutes to the bake time.
Freezer: Baked crisp freezes beautifully. Cool it completely, wrap it in a layer of plastic wrap then foil, and freeze for up to 3 months. Thaw in the fridge overnight and reheat in a 350°F oven until warm and bubbly.
Reheat: The microwave works in a pinch, but the oven (350°F for 10 minutes) keeps the topping crunchy. I’ve reheated individual portions in the toaster oven with great results.

Things I Learned the Hard Way So You Don’t Have To

Don’t peel the peaches. I spent years wasting time with a peeler. The skins soften completely as they bake and add a gorgeous rosy color to the filling. I only peel them if the skins are blemished or if I’m feeling fancy for company.
Use a deep enough dish. This recipe bubbles up. A 2-quart dish (or an 8×8 with at least 2-inch sides) gives you room to spare and catches those beautiful juices. A too-shallow dish will overflow and burn on the bottom of your oven.
Taste your fruit first. Peaches vary wildly in sweetness. If they’re super sweet, cut the sugar by a quarter cup. If they’re a little tart, add an extra tablespoon of granulated sugar to the fruit. You’re the boss here, not the recipe.
Let it rest. I’ve made this mistake more times than I want to admit. The crisp comes out of the oven looking perfect, and you’re tempted to dig in immediately. Give it 15 minutes. The filling will thicken, the topping will settle, and it will be worth the wait. Even if you mess this part up a little, it’ll still taste amazing — I’ve done it.

Make It Yours: My Favorite Twists

Gluten-Free: Substitute the all-purpose flour with a 1:1 gluten-free blend and use certified gluten-free oats. My neighbor Cate makes it this way and says it’s the best crisp she’s ever had — she brings it to every potluck.
Dairy-Free: Use a vegan butter alternative for browning. Miyoko’s or Earth Balance work really well. I’ve made it this way for a friend with a dairy allergy and no one could tell the difference.
Fruit Swap: Nectarines, plums, or raspberries all work beautifully. In the winter, I use frozen peaches and blueberries from the freezer section. It’s not the same as summer, but it’s pretty close.
Spice It Up: Add a pinch of cardamom or ginger to the topping for a warm, unexpected kick. I do this when I want the crisp to feel a little more grown-up.

Questions I Get About This Crisp All the Time

Q: Why is my crisp topping soft instead of crunchy?
A: Ugh, I’ve been there. The culprit is usually either the butter wasn’t cooled enough before mixing (it soaks into the oats instead of coating them) or the topping was pressed down into the fruit. Let your brown butter cool for 5 minutes before mixing, and sprinkle the topping loosely over the fruit. You got this next time.

Q: Can I use frozen fruit straight from the bag?
A: Yes! I do it all the time during winter. Don’t thaw the fruit — toss it with the sugar and cornstarch straight from frozen. You might need to add 5 extra minutes to the bake time, and the filling might be a little looser, but it still works beautifully.

Q: How long does peach crisp last on the counter?
A: It’s best the day it’s made — that’s when the topping is at its crunchiest. But you can keep it covered at room temperature for up to 2 days. To re-crisp the topping, pop it in a 350°F oven for 10 minutes. The microwave will make the topping soft, so I avoid it.

Q: What do you serve with this crisp?
A: Vanilla ice cream is the classic for a reason — the cold creaminess against the warm fruit is perfect. But I also love a dollop of thick Greek yogurt for breakfast the next morning, or a drizzle of heavy cream if we’re feeling extra. My husband always asks for whipped cream, so sometimes I make a batch of that too.

More Recipes Disappear at Our House

If you liked this one, here are a few others that get the same reaction at our table:

[INTERNAL LINK PLACEHOLDER: My Grandmother’s Apple Cake with Brown Butter Glaze] — The one Nora requests for her birthday every single year. Dense, moist, and the brown butter glaze is absolutely mandatory.
[INTERNAL LINK PLACEHOLDER: Skillet Peach Buckle with Ginger Crumble] — A cozier, cobbler-like cousin of this crisp. The ginger adds a little warmth that’s perfect for the fall.
[INTERNAL LINK PLACEHOLDER: No-Churn Brown Sugar Peach Ice Cream] — Because you’re already buying peaches, right? This is the easiest homemade ice cream I’ve ever made, and it’s the perfect partner to this crisp.

The moment this crisp comes out of the oven — the fruit bubbling at the edges, the topping golden and firm — is the moment you’ll understand why this is the recipe I hold onto. It tastes like August. Like home. Like the kind of dessert you make when you want to feed more than just stomachs.

If you try it, come back and tell me how it went. I read every comment and I love hearing how it turns out in your kitchen.

📌 Save this Peach and Blueberry Crisp recipe for the end of summer — it’s the one you’ll want to make before the peaches disappear and the blueberries are gone until next year.

Peach and Blueberry Crisp That Tastes Like Late Summer in the South (It’s the Brown Butter)

Juicy, jammy summer fruit under a crunchy, buttery oat topping — ready in under an hour. The brown butter makes it unforgettable.

Print Recipe Pin Recipe

Prep Time 20

Cook Time 35

Total Time 55

Course Dessert

Cuisine American, Southern

Servings 8

Calories 320 kcal

Equipment

8×8 or 9×9 Baking Dish
Skillet for browning butter
Large Mixing Bowls
Sharp Knife and Cutting Board
Measuring Cups and Spoons
Fork (or your hands) for mixing topping

Ingredients

Fruit Filling

4 cups peaches, sliced (about 4-5 medium)
2 cups fresh blueberries (or frozen, not thawed)
1/4 cup granulated sugar
1 tbsp cornstarch
1 tbsp lemon juice (from about half a lemon)

Topping

6 tbsp unsalted butter
1 cup old-fashioned rolled oats
1/2 cup all-purpose flour (heaping is fine)
1/2 cup packed brown sugar
1/2 tsp cinnamon
1/4 tsp nutmeg (freshly grated if possible)
Pinch of salt

Instructions

Preheat your oven to 375°F. Butter an 8×8 or 9×9 baking dish (or a 9-inch pie dish).
Brown the butter: In a light-colored skillet over medium heat, melt the butter. Swirl occasionally as it foams and sputters. After 3-4 minutes, when the foam settles and you see amber specks at the bottom, and it smells like toasted hazelnuts, pour it into a bowl to cool slightly (about 5 minutes).
Prep the fruit: Slice the peaches into 1/2-inch wedges (no need to peel). In a large bowl, toss the peaches, blueberries, granulated sugar, cornstarch, and lemon juice until the juices look glossy.
Make the topping: In a separate bowl, whisk the oats, flour, brown sugar, cinnamon, nutmeg, and salt. Pour in the cooled brown butter and stir with a fork or your hands until clumps form. Squeeze a handful – it should hold together. If too dry, add a tablespoon of melted butter.
Assemble: Pour the fruit into the prepared dish and spread evenly. Sprinkle the topping over the fruit in an even layer – don’t press it down. Place the dish on a baking sheet to catch drips.
Bake: Bake for 35-40 minutes, until the fruit is bubbling at the edges and the topping is deep golden brown. The juices should be thick and syrupy.
Rest: Let the crisp rest for at least 15 minutes before serving. This allows the filling to set. Serve warm, with vanilla ice cream if desired.

Notes

Don’t peel the peaches – the skins soften during baking and add a rosy color. For make-ahead: assemble unbaked, cover, and refrigerate up to 2 days; bake straight from fridge, adding 5-10 minutes. Baked crisp freezes well for up to 3 months – thaw in fridge and reheat at 350°F to re-crisp the topping. If using frozen fruit, do not thaw; add 5 minutes to bake time.

Keyword brown butter crisp, peach and blueberry crisp, summer dessert