Chocolate Grand Marnier Sour Cream Coffee Cake close up photo of single slice on a green plate

Chocolate Grand Marnier Sour Cream Coffee Cake

Chocolate Grand Marnier Sour Cream Coffee Cake - an outstanding addition to a weekend brunch or even as a scrumptious Sunday dinner dessert.
Course Dessert
Prep Time 25 minutes
Cook Time 45 minutes
Total Time 1 hour 10 minutes
Servings 12 -16
Author Barry C. Parsons


  • 1 3/4 cups flour
  • 1 1/2 tsp baking powder
  • 1 cup butter
  • 1 cup sugar
  • 1 tsp vanilla extract
  • 3 eggs
  • 2 tsp vanilla
  • 1 cup sour cream
  • zest of 1/2 an orange finely minced
  • 1/4 cup cocoa
  • 2 tbsp milk
  • 3 ounces Grand Marnier liqueur or other orange liqueur

For the truffle glaze

  • 1 cup dark chocolate chips I used 50% cocoa chips
  • 1 tbsp butter
  • 3 tbsp whipping cream

/2 cup roughly chopped toasted hazelnuts for garnish (optional)


  1. Preheat oven to 350 degrees F. Grease and flour a 2 inch deep 9 inch baking pan; A spring form pan also works well.
  2. Sift together the flour and baking powder and set aside.Cream together the butter and sugar well. Beat in the eggs, one at a time, beating well after each addition. Beat in the vanilla and sour cream.
  3. Fold in the dry ingredients and divide the batter in half. To one half fold in the orange zest and to the other half fold in the cocoa and milk.
  4. Drop the batter by large spoonfuls randomly into the prepared pan, alternating between the chocolate and orange batters. Swirl slightly with the handle of a wooden spoon if you like for a more marbled effect.
  5. Bake for 40-45 minutes or until a wooden toothpick inserted in the center comes out clean.
  6. Let the cake rest in the pan for about 15 minutes before poking the entire surface of the cake with a wooden skewer. Pour or brush on the Grand Mariner liqueur.
  7. Remove cake, right side up to a wire rack to cool completely.When cool, top with truffle glaze.
  8. For the truffle glaze melt together the chocolate chips, butter and whipping cream in a double boiler.
  9. When melted you can whisk in a small splash of Grand Marnier if you like. Spread over cooled cake and top with toasted chopped hazelnuts.