Preheat the oven to 350°F. Grease and flour two 9-inch round baking pans. In a large bowl, whisk together the flour, sugar, cocoa powder, baking soda, baking powder, and salt.
Add the milk, vegetable oil, eggs, and vanilla extract, and beat with an electric mixer on medium speed until well combined and smooth, about 2 minutes. Divide the batter evenly between the prepared pans.
Bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cakes to cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.
For best results, make sure all the ingredients are at room temperature before beginning. Additionally, be careful not to overmix the batter, as this can result in a dense, tough cake.
For an extra indulgent touch, consider serving the Chocolate Overload Cake with a scoop of vanilla ice cream or a drizzle of warm chocolate sauce.