Peanut Butter Sheet Cake with Peanut Butter Frosting

“This recipe starts with a cake mix and is a peanut and peanut butter-lovers dream! No hand mixer needed for this rich, moist cake slathered with fudge-like homemade frosting.”

1/2 cup (1 stick) salted butter, cut into 4 pieces

2/3 cup creamy peanut butter

1/3 cup vegetable oil

1/3 cup milk (From whole to skim)

1 teaspoon vanilla extract

2 large eggs

1 (15.25 ounce) box yellow cake mix

1/3 cup chopped cocktail peanuts

Peanut Butter Frosting

1/2 cup (1 stick) salted butter, cut into 4 pieces

1/2 cup creamy or peanut butter

1/3 cup milk (From whole to skim)

1 teaspoon vanilla extract

1 (16 ounce) box powdered sugar (3 3/4 cups)