Peanut Butter Marshmallow Cake

Preheat the oven to 350°F (175°C). Grease and flour a 9x13 inch baking pan.

In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.

In another bowl, beat together the peanut butter, softened butter, eggs, and vanilla extract until smooth.

Gradually add the dry ingredients to the wet ingredients, alternating with the milk, and mix until just combined.

Fold in the mini marshmallows and chopped peanuts if using.

Pour the batter into the prepared baking pan and spread evenly.

Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean.

Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.

Once cooled, you can frost with additional peanut butter frosting or serve as is.

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