3 c. Bisquick baking mix
1 c. granulated sugar
1/4 c. butter, softened
1 1/2 c. sour cream
1 1/2 tsp. vanilla
2 eggs
2 c. pared chopped apples
Powdered sugar

Heat oven to 350 degrees. Grease and flour 12-cup Bundt cake pan. Prepare streusel filling by mixing 1/4 cup packed brown sugar, 1/4 cup finely chopped nuts and 1 teaspoon cinnamon until crumbly.

Mix remaining ingredients except apple and powdered sugar; beat vigorously 1 minute. Spread 1/3 of the batter (about 1 1/4 cup) in pan; sprinkle with half of the streusel filling (about 1/4 cup). Sprinkle with 1 cup apple; repeat with 1/3 of the batter, half of the filling and 1 cup apple. Spread with remaining batter.

Bake until wooden pick inserted near center comes out clean, 45-50 minutes. Cool 10 minutes. Remove from pan; sprinkle with powdered sugar.