Indulge in the ultimate peanut butter treat with these Peanut Butter Oatmeal Brownies topped with luscious Peanut Butter Frosting. Perfectly rich and fudgy, these brownies feature a unique blend of creamy peanut butter, hearty rolled oats, and decadent cocoa powder for a chewy yet tender texture. The frosting adds an irresistibly creamy layer that takes these bars to the next level of comfort food. With a simple prep process and bake time of just 30 minutes, this recipe is ideal for busy bakers who want maximum flavor without the fuss. Whether you're serving them for a special occasion or as a midweek pick-me-up, these brownies are a crowd-pleasing dessert packed with sweetness, nuttiness, and homemade charm.
Preheat your oven to 350°F (175°C) and grease a 9x13-inch baking pan or line it with parchment paper.
In a large saucepan, melt the butter over medium heat. Remove from heat and stir in the granulated sugar, brown sugar, and peanut butter until smooth.
Add the eggs one at a time, whisking thoroughly after each addition. Stir in the vanilla extract.
In a medium bowl, combine the rolled oats, flour, cocoa powder, baking powder, and salt. Stir the dry ingredients into the peanut butter mixture until just combined.
Pour the batter evenly into the prepared pan and smooth the top with a spatula.
Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Avoid overbaking.
Let the brownies cool completely in the pan before adding the frosting.
While the brownies are cooling, prepare the frosting. In a medium bowl, beat the powdered sugar, peanut butter, and heavy cream (or milk) together until creamy and smooth.
Spread the frosting evenly over the cooled brownies using an offset spatula or the back of a spoon.
Slice into squares and serve. Store leftover brownies in an airtight container at room temperature for up to 3 days.
Calories |
7170 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 385.9 g | 495% | |
| Saturated Fat | 150.0 g | 750% | |
| Polyunsaturated Fat | 9.6 g | ||
| Cholesterol | 999 mg | 333% | |
| Sodium | 4485 mg | 195% | |
| Total Carbohydrate | 880.3 g | 320% | |
| Dietary Fiber | 59.8 g | 214% | |
| Total Sugars | 640.8 g | ||
| Protein | 136.6 g | 273% | |
| Vitamin D | 3.6 mcg | 18% | |
| Calcium | 670 mg | 52% | |
| Iron | 31.6 mg | 176% | |
| Potassium | 4180 mg | 89% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.