Brush your desired Bundt pan with the Cake Goop, and set aside. Preheat the oven to 350℉.
Sift all dry ingredients, including both sugars, together and set aside.
2¼ cups All-purpose flour, 1 cup Granulated sugar, ½ cup Brown sugar, 2 teaspoon Baking powder, ½ teaspoon Baking soda, ½ teaspoon Salt
Mix Milk, Peanut Butter, Buttermilk, and Sour Cream. Set aside.
¾ cup Peanut butter, ¼ cup Sour cream, ¼ cup Buttermilk, 1 cup Milk
Use the whisk attachment to mix Eggs, Oil, and Vanilla Extract in a separate bowl.
3 Eggs, ¼ +1tbsp Oil, 1 tablespoon Vanilla extract
Start adding the dry ingredients alternating with wet ingredients. Start and finish with dry ingredients. This will be three parts dry and two parts wet ingredients.
Reserve ⅓ of the batter in a bowl. Mix the hot coffee and cocoa powder in a separate bowl and add them to the reserved batter. Pour a layer of the plain batter into the bottom of the pan.
⅓ cup Cocoa powder, ½ cup Coffee
Scoop the chocolate batter over the plain batter.
Scoop the remaining plain batter over the chocolate batter and repeat until both batter are finished. Bake the cake for 25 to 30 minutes or until an insert comes out clean. Let the cake cool down in the pan for 10 minutes, then flip it onto a cooling rack.
While the cake is cooling, make the glaze. Mix 2-3 tablespoons of lukewarm milk into half a cup of peanut butter. The glaze should not be thick but runny enough to flow off the cake. It is a glaze, not a frosting.
½ cup Peanut butter, 3-4 tablespoon Milk