Layered Pumpkin Streusel Cake

• cooking spray (or cooking spray, followed by a dusting of flour)
• 1 12 cups firmly packed light brown sugar
• 1 cup flour
• 2 teaspoons ground cinnamon
• 34 cup butter or 34 cup margarine, divided
• 1 12 cups chopped walnuts
• 1 (18 1/4 ounce) package yellow cake mix
• 3 eggs, lightly beaten
• 1 (15 ounce) can pumpkin
• confectioners' sugar (optional)

1. Preheat oven to 350F
2. Spray 12-cup fluted tube pan with baking spray; set aside.
3. Combine brown sugar, flour and cinnamon in small bowl.
4. Cut in 1/2 cup butter until mixture resembles coarse crumbs.
5. Stir in walnuts; set aside.
6. Beat remaining 1/4 cup butter and dry cake mix in large bowl until light and fluffy.
7. Add eggs, 1 at a time, mixing well after each addition.
8. Add pumpkin; beat 3 minutes, or until well blended.
9. Sprinkle 1/3 of the brown sugar mixture onto bottom of prepared pan; cover with 1/3 of the batter, spreading to form even layer in pan.
10. Repeat layers 2 more times.
11. Bake 45 minutes, or until wooden pick inserted near center comes out clean.
12. Cool in pan 15 minutes; remove from pan to wire rack.
13. Cool completely.
14. Dust with confectioners' sugar, if desired.
15. Cut into 12 slices to serve.

cooking spray, brown sugar, flour, ground cinnamon, butter, walnuts, yellow cake, eggs, pumpkin, confectioners

Taken from www.food.com/recipe/layered-pumpkin-streusel-cake-143856 (may not work)