Our Low FODMAP Pumpkin Layer Cake is easy to make, and yields dramatic results. Make sure to read the recipe through before starting. You might need to order the black cocoa ahead of time.
Make the Cake: Position rack in center of oven. Preheat oven to 350°F (180°C). Coat the inside of a three, 6-inch (15 cbaking pans with nonstick spray, line with parchment paper, then spritz the paper, too. Set aside.
Make the Frosting: Pour the melted butter into a mixing bowl and beat in the cocoa on medium speed using an electric mixer until combined. Slowly beat in confectioners’ sugar alternately with 3 tablespoons of milk. Keep beating until super silky smooth, scraping down bowl as needed. Beat in vanilla and beat in additional milk if needed to make a smooth, spreadable frosting.
Assembly: Trim cake layers if needed to create level layers. Place one cake layer, top side up, on display plate and frost the top. Place second cake layer, top side up down top of frosting and frost that layer’s top as well. Place final layer bottom side up on top of your stacked layers and frost the top and sides either generously with the icing for a smooth look, or use less icing for a schmeared-on look allowing the orange cake to show through. An icing spatula will help make the process easy in either case. Cake is ready to serve or may be stored under a cake dome at room temperature for up to 2 days.