1 cup of sugar

½ cup of cocoa powder

1 cup all-purpose flour

2 teaspoons baking powder

¼ teaspoon salt

½ cup milk

4 tablespoons butter, melted

1 large egg yolk

2 teaspoons vanilla extract

½ cup semisweet chocolate chips

1 cup boiling water


1-Preheat oven to 350 degrees F. Sprays an 8-inch square baking pan with cooking spray.

Whisk ½ cup sugar with ¼ cup cocoa powder and set aside.

2-Whisk the flour, remaining ½ cup sugar, remaining ¼ cup cocoa, baking powder, and salt in a large bowl.

Whisk milk, butter, egg yolk, and vanilla in a medium bowl until smooth.

Stir milk mixture into flour mixture until just combined.

Fold in chocolate chips (batter will be stiff).

3-Using a rubber spatula, scrape batter into prepared pan and spread into corners.

Sprinkle reserved cocoa and sugar mixture evenly over the top.

Gently pour boiling water over cocoa.

Do not stir.

4-Bake until the top of the cake is cracked, the sauce is bubbling and a toothpick inserted into the cakey area comes out mostly clean, about 22-24 minutes.

Cool on a rack for at least 10 minutes.

Serve warm with vanilla ice cream.