1-box yellow cake mix
1&1/4-cups sour cream
1/3-cup vegetable oil
1-teaspoon ground cinnamon
1/2-teaspoon ground nutmeg
3&3/4-cups all purpose flour
3/4-cup packed light-brown sugar
2- teaspoon nutmeg
1&1/2 cups (3 sticks) unsalted bbutter, melted
10- tablespoons confectioners' sugar
2- tablespoons sour cream
Step 1- Heat Oven to 350. Grease a 15x10x1-inch baking pan. Lightly dust pan with flour; shake out any excess flour.
Step 2- Cake: Combine cake mix, sour cream, oil, eggs, cinnamon and nutmeg in large bowl. Beat according to package directions. Pour batter into prepared pan.
Step 3- Bake at 350 for 20 minutes or until toothpick inserted in center comes out clean.
Step 4- Topping: Blend flour, brown sugar, cinnamon, nutmeg, and melted butter in medium bowl until misture is evenly moistened and clumps together.
Step 5- Remove cake from oven. Sprinkle with crumbs. Return to oven; bake 15 minutes or until crumbs are slightly set. Remove pan to wire rack and let cool completely.
Step 6-Glaze: Whisk 8 tablespoons of the confectioners' sugar with the sour cream in a bowl. Dust top of cake evenly with remaing 2 tablespoons confectioners' sugar. Drizzle with glaze. Store cake tightly covered, at room temperature for up to 3 days.