Name: Dalmatian Sheet Cake with Vanilla Buttercream (Gluten-Free)
Ingredients: Cake; 3 cups gluten-free flour blend (360g), or regular cake flour (300g) *; 1/2 tsp xanthan gum or 1 tsp psyllium husk powder (add only with gluten-free flour blend); 1 tsp baking powder; 1 tsp baking soda; 1/2 tsp salt; 4 large eggs, at room temperature; 1-1/2 cups (300g) granulated sugar; 2 tsp vanilla extract; 3/4 cup (180 ml) canola or vegetable oil; 1 cup (240 ml) buttermilk or soured milk, at room temperature; 2 cups (340g) semisweet or milk chocolate chips; Frosting; 4 cups (500g) confectioners' sugar; 1 cup (2 sticks; 226g) butter, at cool room temperature; 2 tsp pure vanilla extract or vanilla paste; 2 to 3 tablespoons milk, as needed