Chocolate Peanut Butter Marble Cake

Ingredients (10)

• ✓ ¼ cup unsweetened cocoa powder
• + 2 tablespoons confectioners' sugar add to pantry
• + 2 tablespoons butter, softened add to pantry
• + 2 tablespoons hot water add to pantry
• + 1 cup peanut butter chips add to pantry
• + 1 tablespoon shortening add to pantry
• + 1 (18.25 ounce) package white cake mix add to pantry
• + ½ cup packed brown sugar add to pantry
• ✓ 1 ¼ cups water
• + 3 eggs add to pantry