Grand Marnier Cake

1 cup butter
1 cup sugar
3 eggs
1 teaspoon Grand Marnier
or any good quality orange liqueur
2 cups flour
1 teaspoon baking powder
1 teaspoon baking soda
1 1/2 cups sour cream
Zest of one orange
1 cup chopped walnuts
Topping:
1/2 cup sugar
1 cup orange juice
1/3 cup Grand Marnier
blanched slivered almonds

Preheat oven to 350 F.

Cream: 1 cup butter with 1 cup sugar until pale and fluffy. Beat in: 3 egg yolks, one at a time. Add: 1 teaspoon Grand Marnier

Sift together: 2 cups all-purpose flour, 1 teaspoon baking powder and 1 teaspoon baking soda.

Add dry ingredients to batter, alternating with 1 1/2 cups sour cream, beginning and ending with dry ingredients and mixing until smooth. Stir in zest of 1 orange and 1 cup chopped walnuts.

Beat until stiff, 3 egg whites. Fold into batter. Pour batter into a greased 9-inch tube pan.

Bake in 350 deg. oven for 50-55 minutes, or until cake tests done.

Topping:
Combine 1/2 cup sugar, 1 cup orange juice, and 1/3 cup Grand Marnier. Pour over hot cake while it is in the pan. Sprinkle with blanched slivered almonds and let cake cool before removing from the pan.