Rhubarb Streusel Pie

TOPPING
2 tablespoons butter -- firm
1/2 cup bisquick
1/4 cup brown sugar -- packed
1/4 cup chopped nuts
FILLING
2 cups rhubarb
3/4 cup milk
2 eggs
1 cup sugar
1/2 cup bisquick
2 tablespoons butter -- softened
1 teaspoon ground cinnamon
1/4 teaspoon ground nutmeg

Heat oven to 375. Grease a 9" pie plate. Prepare Streusel Topping; reserve. Arrange rhubarb evenly in plate. Beat remaining ingrediants until smooth. Pour into plate. Sprinkle evenly with Streusel Topping. Bake until knife inserted in center comes out clean, about 40 minutes. Serve with sweetened whipped cream if desired. STREUSEL TOPPING; Cut butter into baking mix and brown sugar til crumbly; stir in nuts.