Preheat and Prepare: Preheat your oven to 350°F (180°C) and grease a 9-inch square baking pan to prevent the cake from sticking.
Mix Dry Ingredients: In a medium-sized mixing bowl, whisk together 1 cup of all-purpose flour, 3/4 cup of granulated sugar, 2 tablespoons of cocoa powder, 2 teaspoons of baking powder, and 1/4 teaspoon of salt. Ensure that all the dry ingredients are well combined.
Combine Wet Ingredients: In another bowl, mix together 1/2 cup of milk, 2 tablespoons of melted butter, and 1 teaspoon of vanilla extract until the mixture is smooth and well blended.
Blend Wet and Dry Ingredients: Pour the wet ingredients into the bowl containing the dry ingredients. Mix them together until just combined. Be careful avoid overmixing, as this can lead to a dense cake.
Spread Batter: Pour the batter into the prepared baking pan, spreading it evenly with a spatula or the back of a spoon to ensure that it covers the bottom of the pan evenly.
Prepare Pudding Sauce: In a separate bowl, whisk together 3/4 cup of granulated sugar and 1/4 cup of cocoa powder until they are well combined.
Sprinkle Over Batter: Sprinkle the sugar-cocoa mixture evenly over the batter in the baking pan. Make sure to evenly cover the entire surface.
Add Boiling Water: Carefully pour 1 1/2 cups of boiling water over the entire mixture in the pan. Do not stir. The hot water will create a rich chocolate sauce as the cake bakes.
Bake: Place the baking pan in the preheated oven and bake for approximately 25-30 minutes, or until the top of the cake is set and the cake is cracked around the edges. Be careful not to overbake, as this can dry out the cake.
Cool and Serve: Remove the cake from the oven and let it cool for a few minutes in the pan. Serve the chocolate pudding cake warm, either on its own or with a dollop of whipped cream or a scoop of vanilla ice cream for extra delightful. Enjoy!