Chocolate-Chip Oatmeal Cookie Bars

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

Soft-baked oatmeal bars studded with semi-sweet chocolate chips, offering a chewy texture and rich flavor perfect for snacking or dessert. This american-inspired desserts ready in about 37 minutes layers old-fashioned rolled oats, all-purpose flour, baking soda 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.

Prep: 15 min Cook: 22 min Serves 16 American cuisine 180 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 350°F. In a large bowl, whisk together 2 cups old-fashioned rolled oats, 3/4 cup all-purpose flour, 1/2 teaspoon baking soda, 1 teaspoon ground cinnamon, and 1/4 teaspoon salt.
  2. Step 2: In another bowl, combine 3/4 cup melted unsalted butter, 3/4 cup packed brown sugar, and 1/4 cup granulated sugar. Stir in 1 large egg and 1 teaspoon vanilla extract until smooth.
  3. Step 3: Pour the wet ingredients into the oat mixture and stir until just combined. Fold in 1 cup semi-sweet chocolate chips.
  4. Step 4: Press the dough evenly into a greased 9x9-inch baking pan and bake for 20-22 minutes until the edges are golden and a toothpick inserted in the center comes out clean.
  5. Step 5: Cool completely in the pan before cutting into 16 bars to serve.

Frequently asked questions

How long does Chocolate-Chip Oatmeal Cookie Bars take to make?

Total time is about 37 minutes (15 min prep + 22 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 Chocolate-Chip Oatmeal 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 Chocolate-Chip Oatmeal 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 Chocolate-Chip Oatmeal 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 Chocolate-Chip Oatmeal Cookie Bars?

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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