These are so impossibly decadent that I will let the recipe speak for itself:
Brownie Batter-Stuffed Cupcakes
For the brownie batter portion (to keep it simple, you can also use a boxed brownie mix):
3/4 cup unsweetened cocoa powder
1/2 teaspoon baking soda
1/3 cup vegetable oil
1/2 cup boiling water
2 cups white sugar
1/3 cup vegetable oil
1 1/3 cups all-purpose flour
1 teaspoon vanilla extract
1/4 teaspoon salt
In a large bowl, stir together the cocoa and baking soda. Add vegetable oil and boiling water. Mix until well blended and thickened. Stir in the sugar, eggs, and remaining 1/3 cup oil. Finally, add the flour, vanilla and salt; mix just until all of the flour is absorbed.
Set aside (DO NOT BAKE YET!!)
For the cupcake portion:
1 (18.25 ounce) package chocolate cake mix (you could also use white or yellow)
2 tablespoons canola oil
1 1/3 cups water
3 egg whites
1. Preheat an oven to 350 degrees F. Using mini-muffin pans, line 48 muffin cups with paper liners.
2. Mix the cake mix, 2 tablespoons canola oil, 1 1/3 cup water, and 3 egg whites in a large bowl with an electric mixer on low speed until combined. Mix on medium speed for 2 minutes.
Now there are two ways to proceed:
3. For a chewier brownie interior, spoon the brownie batter into prepared muffin cups, filling each cup 1/3 full. Spoon the cake batter over the brownie batter, until muffin cups are each 2/3 full.
4. For a more molten brownie interior, start by adding 1 tablespoon of cake batter to each paper lined cup, then your brownie batter then top with cake batter. This will make them easier to remove from the liner too. (This was James’ preferred method.)
5. Bake in the preheated oven until the tops spring back when lightly pressed, about 20 minutes.
Fluffy Peanut Butter Frosting:
1/2 cup butter, softened
1 cup creamy peanut butter
3 tablespoons milk, or as needed
2 cups confectioners’ sugar
Place the butter and peanut butter into a medium bowl, and beat with an electric mixer. Gradually mix in the sugar, and when it starts to get thick, incorporate milk one tablespoon at a time until all of the sugar is mixed in and the frosting is thick and spreadable. Beat for at least 3 minutes so it is nice and fluffy. James piped the icing on to the cooled cupcakes using his trusty pastry bag and a flower tip, and topped that with jellybeans.
Needless to say, they were a big hit with the Hamilton cast.