Are you a peanut butter lover? Treat yourself with these soft, chewy, and gooey peanut butter brownies. A perfect harmony of rich and creamy peanut butter, light brown sugar, and aromatic vanilla extract. This rich, decadent dessert can be prepared in just 40 minutes. Satisfy your sweet tooth with this fantastic peanut butter brownie recipe.
How do I know when the brownies are done?
Bake the brownies in the preheated oven to 350°F for 20-25 minutes or until slightly golden and the edges are set. You can also check the readiness using a toothpick inserted in the center, if it comes out clean, the peanut butter brownies are ready.
How can I prevent the brownies from being raw in the middle?
Make sure you preheat the oven to 350°F before baking the peanut butter brownies. After 20-25 minutes of baking, insert a toothpick into the center of the brownies, if it comes out clean – your brownies aren’t raw and already baked.
How can I make the brownies chewier?
These peanut butter brownies are chewy enough, but if you want to make them even chewier, use 1 cup of brown sugar instead of a combination of granulated sugar and light brown sugar. Also, you can underbake them slightly to make them chewier.

15-Min Prep Peanut Butter Brownies
Ingredients
- 1 ⅓ cup all-purpose flour
- ½ tsp baking powder
- ½ tsp salt
- ⅔ cup smooth peanut butter
- ⅓ cup margarine
- ½ cup granulated sugar
- ½ cup light brown sugar, packed
- 2 large eggs, room temperature
- ½ tsp vanilla extract
Instructions
- Preheat the oven to 350°F. Line a 9x9-inch baking pan with parchment paper. Leave some paper hanging on the sides, it can help you to remove the peanut butter brownies from the pan. Slightly grease with a non-stick cooking spray. Set aside.
- In a mixing bowl, whisk together all-purpose flour, baking powder, and salt. Set aside.
- In a separate mixing bowl, using an electric mixer, beat together the peanut butter, margarine, granulated sugar, and light brown sugar until smooth. Then, beat in the eggs and vanilla extract until smooth and well combined.
- Add the dry ingredients to the wet. Stir using a rubber spatula until combined.
- Transfer the peanut butter mixture to the prepared baking pan. Spread evenly.
- Bake in the preheated oven for 20-25 minutes or until slightly golden and the edges are set. You can also check the readiness using a toothpick inserted in the center, if it comes out clean, the peanut butter brownies are ready.
- Remove from the oven and place the baking pan on a cooling rack. When cooled to room temperature, remove from the baking pan and slice into 16 squares. Enjoy!
Nutrition
Frequently Asked Questions about Peanut Butter Brownies
1. What can I do if I don’t have a hand mixer?
You can use a stand mixer with a paddle attachment if you don’t have a hand mixer. Also, you can use a hand whisk or a wooden spoon to mix the ingredients.
2. How long should I let the brownies cool?
Let the peanut butter brownies cool to room temperature before cutting them. Usually, it takes about 30-60 minutes.
3. Can I double the recipe?
Yes, you can double the recipe, but you should use a larger baking pan. For example, use a 13×9-inch baking pan or divide the batter between two 9×9-inch baking pans.
4. Can I add chocolate to the recipe?
Yes, you can add 1/2 cup semisweet chocolate chips, white chocolate chips, or peanut butter chips to the recipe. You can fold them into the batter before transferring it to the baking pan.
5. What size pan is best for these brownies?
The best size pan for this recipe is a 9×9-inch baking pan, but you can also use an 8×8-inch baking pan. In this case, the peanut butter brownies will be thicker, and the baking time will increase.