Irresistible Chocolate and Peanut Butter Cake

Ingredients:

For the Cake:
1 3/4 cups all-purpose flour
2 cups granulated sugar
3/4 cup unsweetened cocoa powder
1 1/2 teaspoons baking powder
1 1/2 teaspoons baking soda
1 teaspoon salt
2 large eggs
1 cup whole milk
1/2 cup vegetable oil
2 teaspoons vanilla extract
1 cup boiling water
For the Peanut Butter Frosting:
1 cup unsalted butter, softened
1 cup creamy peanut butter
4 cups powdered sugar
1/4 cup heavy cream
For the Chocolate Ganache:
1 cup semi-sweet chocolate chips
1/2 cup heavy cream