Chocolate Beet Cupcakes with Ganache and Marshmallow Filling

INGREDIENTS

• 3-4 medium beets (about 1 lb)
• 2/3 cup coconut milk
• 1/3 cup canola oil
• 1 teaspoon vanilla extract
• 1 tablespoon lemon juice
• 3/4 cup sugar
• 1 1/4 cup all-purpose flour
• 1/4 cup cocoa powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1/4 teaspoon salt
• For Filling:
• 4 tablespoons unsalted butter or shortening, at room temperature
• 1 cup powdered sugar
• 2 teaspoons pure vanilla extract
• 3 tablespoons heavy cream
• 1 cup marshmallow creme
• For Ganache:
• 6 oz. semisweet chocolate
• 1 cup heavy cream
• 1 tablespoon butter
• 1 teaspoon vanilla