For the Cake:

• 2 ½ cups all-purpose flour
• 2 ½ tsp baking powder
• ½ tsp salt
• 1 cup unsalted butter, softened
• 2 cups granulated sugar
• 4 large eggs
• 1 tbsp vanilla extract
• 1 cup whole milk
• Red and blue gel food coloring

For the Buttercream Frosting:

• 1 ½ cups unsalted butter, softened
• 4 cups powdered sugar
• 3 tbsp heavy cream or milk
• 1 tsp vanilla extract
• Black gel food coloring

For Decoration:

• Red and blue fondant
• Black edible food marker or black royal icing for web design
• White fondant or edible prints for Spiderman’s eyes