Peanut Butter Crumble Brownie Recipe

If you have been following us for any amount of time you know we love to bake at our house. However, not everything can be baked from scratch due to time restrictions.

Today I am sharing my most recent creation that starts with a boxed brownie mix. These brownie recipes are so simple because you really don’t need to think too much. Simply change-up the add-ins the recipe and you have a completely new dessert.

Like semi homemade dessert recipes?

Then be sure to check out my post filled with 20 great recipes that all start with a boxed brownie mix. Today’s short cut recipe includes two flavors I love, peanut butter and chocolate. We hope you enjoy this Peanut Butter Crumble Brownie recipe today.

Peanut Butter Crumble Brownie Pin

To make this Peanut Butter Crumble Brownie Recipe, start with your favorite brownie mix, I just usually buy what is on sale, and prepare per the package directions. This recipe calls for a box that can fill a 9×13 pan.

Then make the crumble. I make this in a 4 cup Pyrex measuring cup ( this pic was a 2 cup and too small)

ingredients to make the Peanut Butter Crumble brownie toppings
Top it with the peanut butter crumble, pressing lightly into the brownie batter. 

Peanut Butter Crumble sprinkled on uncooked brownie batter in baking pan with parchment paper lining

Then add the chocolate chips. If you are feeling festive add colored M& Ms instead of the chips. Hey why not add both, it is a dessert anyway.

layering the toppings to the Peanut Butter Crumble Brownie batter


Bake until your toothpick comes out clean. In no more time than making a brownie mix, you now have this flavorful and easy brownie dessert that looks like you spent hours preparing.

uncut brownies with a Peanut Butter Crumble topping

 I have made this more than once and I like it both ways with M&M’s and without. The family liked it both ways but the kids always like something a little more with candy inside!!.

Peanut Butter Crumble Brownies sliced on a piece of parchment paper

So whether you are making a dessert for the family or a fall outing don’t stress over it, start it off with a brownie mix and adding peanut butter and oatmeal never hurt anyone either.

Peanut Butter Crumble Brownie Recipe

Peanut Butter Crumble Brownies 

  • What will your family think of this Peanut Butter Crumble Brownie Recipe? 

Other brownie Recipes you might like: 

Caramel Pretzel Brownies Recipe     

the ultimate brownie recipe check out these Caramel Pretzel Brownies

Peanut Butter Crumble Brownie

Peanut Butter Crumble Brownie recipe

Yield: 10
Prep Time: 10 minutes
Cook Time: 30 minutes
Total Time: 40 minutes

A quick and easy brownie dessert that starts with a brownie mix. Peanut Butter Crumble Brownie recipe


  • 1 18.25-ounce box brownie mix
  • 1/3 cup canola oil
  • 1/4 cup water
  • 2 eggs
  • 1/2 cup peanut butter, crunchy or creamy
  • 2 tablespoons butter
  • 1/3 cup light brown sugar
  • 1 cup old-fashioned oatmeal
  • 2 tablespoons all-purpose flour


  1. Preheat oven 350°F. Line 13x9x2-inch baking pan with foil and coat with nonstick cooking spray. . In large bowl, mix together brownie mix, oil, water and eggs until well combined. Transfer to prepared pan.
  2. In microwave-safe bowl, I like to use a 4 cup Pyrex cup, microwave peanut butter and butter one minute; stir until melted. Stir in brown sugar, oatmeal and flour until combined.
  3. Sprinkle and gently press peanut butter mixture over brownie layer. Sprinkle with chocolate chips or M & M's . Bake 20 minutes or until top is soft to touch.
  4. Allow to cool on a rack and then take out the entire pan of brownies, lifting out the tin foil and cut.
Nutrition Information
Yield 12 Serving Size 1
Amount Per Serving Calories 380Total Fat 21gSaturated Fat 4gTrans Fat 0gUnsaturated Fat 16gCholesterol 36mgSodium 220mgCarbohydrates 45gFiber 1gSugar 6gProtein 6g

All information and tools presented and written within this site are intended for informational purposes only. I am not a certified nutritionist and any nutritional information on should only be used as a general guideline.

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