Impossible Rhubarb Streusel Pie

Topping

 * 2 tbsp butter; firm
 * ½ cup Bisquick
 * ¼ cup brown sugar; packed
 * ¼ cup nuts; chopped

Filling

 * 16 oz frozen rhubarb; thawed, drained
 * ¾ cup milk
 * 2 eggs
 * 1 cup sugar
 * ½ cup Bisquick
 * 2 tbsp butter; softened
 * 1 tsp ground cinnamon
 * ¼ tsp ground nutmeg

Directions

 * 1) Heat oven to 375°F.
 * 2) Grease a 9" pie plate.

Topping

 * 1) Prepare streusel topping by combining all the topping ingredients; reserve.

Filling

 * 1) Arrange rhubarb evenly in plate.
 * 2) Beat remaining ingredients until smooth 15 seconds on high in blender.
 * 3) Pour into plate.
 * 4) Sprinkle evenly with streusel topping.
 * 5) Bake until knife inserted in center comes out clean, about 40 minutes.
 * 6) Serve with sweetened whipped cream if desired.