1 pkg. yellow cake mix
1 box instant butterscotch pie filling
3/4 c. oil
3/4 c. water

Mix above ingredients in bowl.

Beat 4 eggs separately. Add to the above and mix. Pour in 9x13 pan.

SWIRL:

1/2 c. sugar
1/2 c. chopped nuts
1 tsp. cocoa
1 tsp. cinnamon

Mix and save about 1/4 cup to sprinkle on top. Put remaining swirl mix on top of batter and with a spatula or spoon, swirl it around. Bake 350 degrees, 30-40 minutes.