Cake:

4 eggs, separated
1/2 c. brown sugar
1 c. all-purpose flour
1 tsp. baking powder
1/2 tsp. salt
1/3 c. butter, melted
1 tsp. vanilla

Sauce:

1/4 c. butter
1 c. orange juice
1/2 c. powder sugar
1/2 - 1 c. rum
chopped pecans (optional)

Beat egg white till stiff. Beat in 4 Tbsp. brown sugar. Beat yolks with remaining brown sugar and add to egg whites. Fold in flour, baking powder & salt. Add butter and vanilla. Pour into a greased and floured Bundt pan.

Bake at 375°F for 25 - 30 minutes. When done, invert cake onto plate, poke holes in top with skewer. Combine sauce ingredients and heat through. Drizzle sauce over warm cake. Garnish with chopped pecans.