1/2 cup butter, softened
1/2 cup granulated sugar
1/2 cup firmly packed light brown sugar
2/3 cup all-purpose flour
1 teaspoon ground cinnamon
1/2 teaspoon ground nutmeg
1. Beat butter at medium speed with an electric mixer until creamy; gradually add granulated sugar and brown sugar, beating well. Add flour, cinnamon, and nutmeg; beat just until blended.
Recipe found here: Streusel Topping