Chocolate Peppermint Cake

Name: Chocolate Peppermint Cake
Prep time: 30 min
Cook time: 20 min
Total time: 50 min
Cuisine: American
Ingredients: 2 cups sugar; 1-3/4 cups all-purpose flour; 3/4 cup baking cocoa; 1-1/2 teaspoons baking soda; 1-1/2 teaspoons baking powder; 1 teaspoon salt; 1 cup milk; 1/2 cup canola oil; 2 eggs; 2 teaspoons vanilla extract; 1 cup boiling water; 2 cups heavy whipping cream; 1/4 cup confectioners' sugar; 1 teaspoon vanilla extract; 2 drops red food coloring, optional; 2/3 cup crushed peppermint candy, divided; 2 tablespoons butter; 2 tablespoons baking cocoa; 2 tablespoons water; 1/2 teaspoon vanilla extract; 1 cup confectioners' sugar