Marble Squares

01Method

1. 1

   Heat the oven to 375°F (190°C). Prepare a 10x15-inch jellyroll pan by greasing and flouring it.

2. 2

   Combine the margarine, water, and cocoa powder in a medium saucepan over medium-high heat. Bring the mixture to a boil, then take it off the heat. Mix the flour and the larger portion of sugar together, then stir into the cocoa mixture until fully incorporated. Fold in the eggs, sour cream, baking soda, and salt. Spread the batter evenly across the prepared pan.

3. 3

   In a separate bowl, beat together the cream cheese and the smaller portion of sugar until the mixture is smooth. Drop spoonfuls of the cream cheese mixture over the top of the batter, then drag a knife through both layers to create a marbled pattern. Scatter the chocolate chips evenly over the surface.

4. 4

   Bake for 25 to 30 minutes, until the edges begin to pull away from the sides of the pan. Allow to cool completely before slicing into bars.