°1 cup sugar
°½ cup cocoa powder
°1 cup flour
°2 teaspoons baking powder
°Half a teaspoon of salt
°Half a cup of milk
°four tablespoons melted butter
°1 egg yolk
°2 tsp vanilla extract
°Half-candy chocolate chip cup
°1 cup boiling water
* instructions:

1- Preheat the oven to 350 degrees F . Spray an 8-inch rectangular baking pan with cooking spray. Whisking ½ C sugar with ½ C cocoa powder & set apart .

2- Mix the flour, the rest of the cup of sugar, and the rest of the cup of cocoa, baking powder and salt in a big bowl. Whisk collectively the milk, butter, egg yolks, and vanilla in a medium bowl till smooth. Stir the milk combination into the flour combination till absolutely combined. Fold the chocolate chips 

3- Using a rubber spatula, scrape the dough right into a organized pan and distribute it at the corners. Sprinkle the cocoa combination and reserved sugar calmly on top. Sweetly pour boil water on cocoa. Don't moving .
four- Bake the cake till the top of the cake is cracked, the sauce effervescent and a toothpick inserted into the area of ​​the cake comes out on the whole clean, approximately 22-24 minutes.  Cool on rack for as a minimum 10 minutes. Serve some thing heat with vanilla and ice cream.

Enjoy !