1/4 cup unsweetened cocoa powder

pinch of salt

1/2 teaspoon baking powder

1/2 teaspoon baking soda

1 cup (250 mL) brown sugar

1/2 cup (125 mL) crystal sugar

3/4 cup unsalted margarine, softened

1 whole egg

2 egg whites

1/4 cup yogurt

1/4 cup sour cream

1 teaspoon vanilla

3/4 (175 mL) cup boiling water

ICING:

2 cups chocolate chips
1 cup light sour cream
2 tablespoons coffee or chocolate flavored liqueur

Makes 15-18 servings.

• Sift together flour, baking soda, baking powder, cocoa and salt.
• In separate bowl beat margarine and brown sugar until fluffy.
• Still beating add egg and egg whites, vanilla, yogurt and sour cream, mix well.
• Preheat oven to 375 F and grease 13x9 cake pan.
• Gradually add flour mixture to cake batter and mix until mixture is well combined.
• Still beating, add in boiling water, scrape down sides of bowl and continue to mix until is combined.
• Pour batter into prepared cake pan.
• Bake in preheated oven 30-35 minutes or until tester inserted in center comes out clean.
• Let cake cool completely on rack.
• Prepare icing and spread over cake.

• In medium bowl melt chocolate, stir in sour cream and liqueur and beat until smooth. 
• Cover and refrigerate for 30 minutes. Spread icing over cake and decorate as desired.