Name: Chocolate Cake with a Secret Ingredient (Gluten-Free option)
Ingredients: Chocolate Surprise Cake; 1-1/2 cups (180g) all-purpose flour or gluten-free flour blend; (If your GF blend does not have xanthan gum in it, add 1/4 tsp to the dry ingredients); 2/3 cup unsweetened cocoa powder, preferably Dutch processed; 2 tsp baking powder, gluten-free if needed; 1 tsp baking soda; 1 tsp espresso powder or instant coffee (not ground coffee); 1/2 tsp kosher or fine sea salt; 1/2 cup buttermilk (low-fat is fine); 1 cup pure pumpkin puree (NOT pumpkin pie filling!); 1 tsp vanilla bean paste or extract; 3 large eggs; 1 egg yolk; 3/4 cup butter (1-1/2 sticks), softened to room temperature; 1 cup light or dark brown sugar; 1 cup granulated sugar; Chocolate Cream Cheese Frosting; 3 oz softened cream cheese; 3 oz mascarpone; 1-1/2 + 3/4 cups powdered sugar, divided; 2 tbsp unsweetened cocoa powder; 1/4 tsp cinnamon (I did not use); 1/2 tsp vanilla bean paste or extract; 1-1/2 cups heavy cream; 1 tsp vanilla bean paste or extract; Orange and green food coloring gels (see hint above), optional; Melted semisweet chocolate for decorating, optional