One-Bowl Chocolate Chip Cookie Bars with Brown Butter

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Soft and chewy chocolate chip cookie bars made easy with nutty brown butter and a single bowl. This american-inspired desserts ready in about 35 minutes layers unsalted butter, 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 220 calories and feeds 9, 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.

Prep: 10 min Cook: 25 min Serves 9 American cuisine 220 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 350°F and line an 8x8-inch baking pan with parchment paper, leaving overhang for easy removal. In a medium saucepan, melt 6 tbsp unsalted butter over medium heat, stirring frequently until it foams and turns golden brown with a nutty aroma, about 5 minutes; immediately remove from heat.
  2. Step 2: Transfer the brown butter to a large mixing bowl and whisk in 3/4 cup light brown sugar and 1/4 cup granulated sugar until combined. Add 1 large egg and 1 tsp vanilla extract, whisking until smooth.
  3. Step 3: Stir in 1 cup all-purpose flour, 1/2 tsp baking soda, and 1/4 tsp salt until just combined. Fold in 3/4 cup semisweet chocolate chips evenly.
  4. Step 4: Spread the batter evenly into the prepared pan with a spatula and bake for 22-25 minutes until golden brown on the edges and a toothpick inserted in the center comes out with a few moist crumbs.
  5. Step 5: Remove from oven and cool completely in the pan on a wire rack before slicing into bars.

Frequently asked questions

How long does One-Bowl Chocolate Chip Cookie Bars with Brown Butter take to make?

Total time is about 35 minutes (10 min prep + 25 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 One-Bowl Chocolate Chip Cookie Bars with Brown Butter?

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 One-Bowl Chocolate Chip Cookie Bars with Brown Butter?

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 One-Bowl Chocolate Chip Cookie Bars with Brown Butter for a different number of people?

The recipe is written for 9 servings. Multiply each ingredient by (your serving target / 9). 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 One-Bowl Chocolate Chip Cookie Bars with Brown Butter?

American 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.

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