1 pkg. orange cake mix
2 tbsp. firm butter
1 1/2 c. sour cream
1/3 c. brown sugar
3 eggs
1/2 c. nuts

Grease and flour tube pan. Into a small bowl, measure 1/4 cup cake mix (dry); cut in butter. Stir in sugar and nuts and set aside for filling.

In large bowl; blend remaining cake mix, the eggs and sour cream on low speed. (Batter will be thick and slightly lumpy.) Pour half of batter into prepared pan. Sprinkle filling over batter. Spoon and gently spread remaining batter over filling. Bake 60 to 65 minutes at 350 degrees. Cool 10 minutes and remove from pan.