Indulge in the irresistible decadence of Peanut Butter Brownies Using a Cake Mix, a recipe that combines the ease of a boxed chocolate cake mix with the rich, nutty flavor of creamy peanut butter. Perfectly balanced between fudgy and chewy, these brownies are studded with semi-sweet chocolate chips and peanut butter chips, adding bursts of sweetness and texture to each bite. With minimal prep time—just 15 minutes—and a short bake, this recipe is ideal for busy chocolate lovers seeking a quick dessert fix. Serve them as a crowd-pleasing treat or enjoy them as a comforting indulgence at home. Plus, with pantry staples like milk, eggs, and butter, this recipe proves that simple ingredients can yield extraordinary results. Don't miss out on this ultimate peanut butter brownie recipe—your taste buds will thank you!
Preheat your oven to 350°F (175°C). Lightly grease a 9x13-inch baking pan with non-stick cooking spray or line it with parchment paper for easy removal.
In a large mixing bowl, combine the chocolate cake mix, eggs, melted butter, and milk. Stir until well mixed and the batter is thick and smooth.
Add the creamy peanut butter to the batter and stir until it's fully incorporated.
Fold in the semi-sweet chocolate chips and peanut butter chips to distribute them evenly throughout the batter.
Spread the batter evenly into the prepared baking pan, smoothing the top with a spatula.
Bake in the preheated oven for 20-25 minutes, or until a toothpick inserted into the center comes out with moist crumbs (not wet batter). Be careful not to overbake, as the brownies should remain fudgy.
Remove the pan from the oven and allow the brownies to cool completely in the pan before cutting into squares.
Serve and enjoy! Store any leftovers in an airtight container at room temperature for up to 3 days.
Calories |
2920 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 232.9 g | 299% | |
| Saturated Fat | 110.3 g | 552% | |
| Polyunsaturated Fat | 0.0 g | ||
| Cholesterol | 261 mg | 87% | |
| Sodium | 1080 mg | 47% | |
| Total Carbohydrate | 199.1 g | 72% | |
| Dietary Fiber | 16.5 g | 59% | |
| Total Sugars | 141.4 g | ||
| Protein | 49.5 g | 99% | |
| Vitamin D | 0.3 mcg | 2% | |
| Calcium | 164 mg | 13% | |
| Iron | 7.7 mg | 43% | |
| Potassium | 1094 mg | 23% | |
*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.