Peanut Brown-Butter Cookie Bars
Buttery cookie bars infused with nutty brown butter and crunchy peanuts, baked to golden perfection. This desserts-inspired desserts ready in about 38 minutes layers (2 sticks) unsalted butter, packed light brown sugar, granulated sugar into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 180 calories and feeds 16, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1 cup (2 sticks) unsalted butter
- 1 cup, packed light brown sugar
- 1/2 cup granulated sugar
- 2 large eggs
- 1 tbsp vanilla extract
- 2 cups all-purpose flour
- 1 tsp baking soda
- 1/2 tsp salt
- 1 cup, chopped roasted peanuts
Instructions
- Step 1: Preheat oven to 350°F. In a medium saucepan over medium heat, melt 1 cup (2 sticks) unsalted butter, swirling occasionally until it turns golden brown with a nutty aroma, about 4-5 minutes. Remove from heat and let cool for 5 minutes.
- Step 2: In a large bowl, whisk 1 cup packed light brown sugar, 1/2 cup granulated sugar, 2 large eggs, and 1 tbsp vanilla extract until smooth.
- Step 3: Slowly pour the browned butter into the sugar mixture, whisking constantly until fully incorporated.
- Step 4: In a separate bowl, whisk 2 cups all-purpose flour, 1 tsp baking soda, and 1/2 tsp salt. Gradually fold the dry ingredients into the wet mixture until just combined.
- Step 5: Stir in 1 cup chopped roasted peanuts evenly.
- Step 6: Spread batter into a greased 9x13-inch baking pan, smoothing the top. Bake for 25-28 minutes, until edges are golden and a toothpick inserted in the center comes out with moist crumbs.
- Step 7: Cool completely before slicing into bars and serving.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Peanut Brown-Butter Cookie Bars take to make?
Total time is about 38 minutes (10 min prep + 28 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.
How do I store leftover Peanut Brown-Butter Cookie Bars?
Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.
Can I substitute ingredients in Peanut Brown-Butter Cookie Bars?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Peanut Brown-Butter Cookie Bars for a different number of people?
The recipe is written for 16 servings. Multiply each ingredient by (your serving target / 16). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Peanut Brown-Butter Cookie Bars?
Desserts desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
