Grand Marnier Cake

Ingredients

• 1 1/4 c. sugar
• 1 c. (2 sticks) butter, at room temperature
• 3 large eggs, separated
• 1/3 c. Grand Marnier
• 2 1/2 c. cake flour (not self-rising)
• 1 tsp. baking powder
• 1 tsp. baking soda
• 1 c. sour cream
• 1/2 c. coarsely chopped nuts
• 2 Tbsp. grated orange rind
• 1 Tbsp. grated lemon rind
• 1/3 c. orange juice (fresh)
• 2 Tbsp. sugar
• confectioners sugar