Prep Time 15 minutes mins
Cook Time 30 minutes mins
Total Time 45 minutes mins
Don't skip the rest: The 10-minute rest is crucial for the casserole to hold its shape. Use full-fat sour cream: Low-fat makes the sauce thin and gritty. Brown the beef well: Deep caramelization adds savory depth. Cook noodles al dente: They finish cooking in the oven. For swaps: ground turkey or chicken (add 1 tbsp oil), dairy-free versions (use dairy-free soup, sour cream, and cheese), gluten-free (use GF noodles and cream of mushroom), add vegetables like frozen peas or sautéed mushrooms, or add green chiles for spice.