Preheat the Oven:
Preheat your oven to 350°F (175°C) and grease a 9-inch round cake pan.
Mix Dry Ingredients:
In a large mixing bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt until combined.
Combine Wet Ingredients:
Add the milk, vegetable oil, and vanilla extract. Mix until the batter is smooth.
Add Boiling Water:
Carefully stir in the boiling water until everything is well combined. The batter will be thin, which is perfect for a moist cake!
Fold in Chocolate Chips:
Gently fold in the chocolate chips to give the cake pockets of melted chocolate.
Bake:
Pour the batter into your prepared pan and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
Cool and Serve:
Let the cake cool in the pan for a few minutes before transferring it to a wire rack. Serve it warm with a drizzle of fudge sauce and whipped cream if desired.