Homemade Biscoff Oatmeal Cookies That Are Chewier Than Any Bakery Version — in 30 Minutes
These homemade Biscoff oatmeal cookies stay chewy for days with crispy edges and soft centers, thanks to melted butter and an extra egg yolk. Ready in 30 minutes with no chilling – perfect for lunchboxes, cookie swaps, or a cozy afternoon treat.
Equipment
- Large Mixing Bowl
- Whisk
- Rubber spatula
- Cookie scoop (2-tablespoon)
- Baking sheets
- Parchment Paper
Ingredients
- 1 cup unsalted butter
- 1 cup packed brown sugar
- ½ cup granulated sugar
- 1 large egg
- 1 egg yolk
- 1 teaspoon vanilla extract
- ¾ cup creamy Biscoff spread
- 1½ cups all-purpose flour
- ½ teaspoon baking soda
- ½ teaspoon salt
- 2 cups old-fashioned rolled oats
- ½ cup crushed Biscoff cookies
Instructions
- Preheat oven to 350°F. Line two baking sheets with parchment paper.
- In a large bowl, whisk together the melted butter, brown sugar, and granulated sugar until smooth – about 30 seconds. Add the egg and egg yolk, vanilla, and Biscoff spread. Whisk until fully combined and slightly thickened, about 1 minute. The mixture should look like thin caramel.
- In a separate bowl, whisk the flour, baking soda, and salt. Add to the wet mixture and fold with a rubber spatula until just combined – a few streaks of flour are okay. Overmixing will make the cookies tough.
- Fold in the rolled oats and crushed Biscoff cookies until evenly distributed. The dough will be thick and a little sticky – that is exactly right.
- Using a 2-tablespoon cookie scoop (or two spoons), drop rounded balls of dough onto the prepared baking sheets, spacing them about 2 inches apart. I usually get 12 per sheet. The dough balls should look rough on the surface – that helps create those craggy edges as they bake.
- Bake one sheet at a time on the center rack for 10-12 minutes, or until the edges are golden brown and the centers look just set and slightly underdone – they will continue baking on the hot pan. Check at 9 minutes for hot ovens.
- Let the cookies rest on the baking sheet for 5 minutes. This is crucial – they are too fragile to move right out of the oven. After 5 minutes, transfer to a wire rack to cool completely. Or eat one warm – no judgment.
Notes
Don't overbake – edges should be set but centers still soft. Let cookies rest on pan for 5 minutes before moving. For thicker cookies, chill dough balls for 20-30 minutes before baking. Store at room temperature in an airtight container for up to 5 days (add a slice of bread to keep them soft) or freeze for up to 3 months. For dairy-free, use vegan butter or melted coconut oil. For gluten-free, use a 1:1 GF flour blend and certified GF oats. For a fancy version, drizzle cooled cookies with melted white chocolate and flaky sea salt.