No-Bake Chocolate Oatmeal Cookie Bars

By AislePrompt Editorial · Published 2026-05-04 · Updated 2026-05-04

Quick and chewy no-bake bars combining cocoa, peanut butter, and oats for an indulgent yet simple dessert. This American-inspired recipe, ready in about 20 minutes, layers unsweetened cocoa powder, unsalted butter, 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 12, 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

• 1/2 cup unsweetened cocoa powder
• 1/2 cup (1 stick) unsalted butter
• 1 cup granulated sugar
• 1/4 cup milk
• 1 cup creamy peanut butter
• 1 tsp vanilla extract
• 3 cups old-fashioned rolled oats

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Instructions

1. Step 1: In a medium saucepan over medium heat, combine 1/2 cup unsweetened cocoa powder, 1/2 cup unsalted butter, 1 cup granulated sugar, and 1/4 cup milk. Stir constantly until the mixture comes to a boil, then allow to boil for 1 minute while stirring.
2. Step 2: Remove the saucepan from heat and stir in 1 cup creamy peanut butter and 1 teaspoon vanilla extract until smooth and fully combined.
3. Step 3: Immediately add 3 cups old-fashioned rolled oats to the chocolate mixture and stir thoroughly until all oats are coated.
4. Step 4: Line an 8x8-inch pan with parchment paper and press the mixture evenly into the pan. Refrigerate for at least 1 hour until firm before cutting into bars.