Cranberry coffeecake recipe

My friend asked for this recipe so I thought I'd share with everyone.

Cranberry coffeecake (from The Joy of Cooking)

Preheat oven to 350. Prepare streusel and set aside.

Streusel: Blend with a fork until mixture resembles coarse crumbs:
2/3 cup all-purpose flour
2/3 cup finely chopped walnuts or pecans
2/3 cup sugar or brown sugar
5 Tbsp. melted butter
1 tsp. gr. cinnamon
1/4 tsp. salt

Whisk together:

2 cups whole wheat pastry flour
1 tsp. baking powder
1 tsp. baking soda
1/2 tsp. salt

Combine in another bowl and set aside:
1 1/4 cups sour cream or yogurt (I use yogurt)
1 tsp. vanilla

In a large bowl, beat on high speed until lightened in color and texture, 3-4 min.:
4 Tbsp. (1/2 stick) unsalted butter
1 1/4 cup sugar

Beat in 1 at a time:
2 eggs

Add the flour mixture in 3 parts, alternating with the sour cream mixture in 2 parts, beating on low speed. Last, add 2 1/2 cups cranberries (or diced peeled apples for a variation). Scrape the batter into greased 9x13-in. baking pan. Bake for 40-45 min. or until toothpick comes out clean.