Oatmeal Chocolate Peanut Butter Bars
Chewy oat and peanut butter base layered with chocolate chips and topped with a crumbly oat-chocolate streusel. These bars deliver rich chocolate flavor with nutty peanut butter throughout, balanced by the texture of quick oats. Perfect for lunchboxes, potlucks, or afternoon snacking. The combination of creamed butter and peanut butter creates a tender crumb while the oat topping adds pleasant textural contrast.
Ingredients
Instructions
- 1
Heat oven to 325°F.
- 2
Combine flour, baking soda, and salt in small bowl and set aside.
- 3
Beat together butter, brown sugar, sugar, peanut butter, and vanilla at medium speed until creamy.
- 4
Add eggs one at a time, beating well after each addition.
- 5
Add flour mixture and beat at low speed until well mixed.
- 6
Stir in 2 cups oats and reserve 1 1/2 cups of mixture for topping.
- 7
Spread remaining mixture into greased 13x9-inch pan.
- 8
Carefully spread with remaining peanut butter.
- 9
Sprinkle with 3/4 cup chocolate chips.
- 10
Combine reserved topping mixture with remaining oats until mixture resembles coarse crumbs.
- 11
Stir in remaining chocolate chips.
- 12
Drop by spoonfuls over filling in pan.
- 13
Bake 28-32 minutes or until top is deep golden brown.
- 14
Cool completely in pan over wire rack.
- 15
Cut into bars.
Tips
Don't skip cooling completely in the pan - the bars firm up during cooling and cut cleanly into neat pieces without crumbling.
Reserve the peanut butter layer for a distinct stratum; spreading it on the base before the chocolate chips prevents the layers from blending together during baking.
Good to Know
Store in airtight container at room temperature for up to 5 days. Keep bars separated with parchment paper to prevent sticking.
Bars can be baked up to 3 days ahead and stored covered. Do not freeze as the texture becomes too dense.
Serve at room temperature as a dessert, snack, or lunchbox treat. Pairs well with cold milk or coffee.
Common Mistakes
Do not overbake to avoid dry bars; remove at deep golden brown stage
Do not skip cooling in pan to avoid bars falling apart when cutting
Do not skip the parchment between reserved oat mixture and base filling to avoid layers blending
Substitutions
Dairy-Free Swaps
Vegan Options
Nut-Free Alternatives
General Alternatives
FAQ
Can I use natural peanut butter instead?
Yes, but the texture may differ slightly. Natural peanut butter has less stabilizer, so stir it well before measuring and expect a slightly less uniform crumb structure in the finished bars.
What if I don't have a 13x9-inch pan?
Use an 8x8-inch pan for thicker bars; bake 35-40 minutes. Or use a 9x13-inch pan for thinner bars; check at 25 minutes. Adjust baking time based on thickness.
How long can I keep baked bars?
Store in airtight container at room temperature up to 5 days. Beyond that, bars dry out. Freezing is not recommended as the bars become dense and lose their texture quality.