Step 1

Preheat the oven to 350 degrees F. Spray an angel food pan or tube pan with removeable bottom with non-stick spray.

Step 2

Sift together dry ingredients; flour, baking powder, baking soda, salt into a large mixing bowl.

Step 3

In a separate bowl, cream together butter and sugar.

Step 4

Beat in eggs one at a time. Add vanilla.

Step 5

Mix in butter/sugar mixture into the dry ingredients.

Step 6

Add in sour cream a little at a time and mix together.

Step 7

Make the Streusel. In a small bowl mix the sugar and butter together with a fork. Add the flour, cinnamon and nuts; mix together

Step 8

Pour in half the batter, sprinkle with half streusel topping. Repeat.

Step 9

Bake at 350 degrees for 45 minutes; reduce temperature to 325 degrees for 15 additional minutes.