Blueberry Streusel Cobbler

Preheat oven to 325 degrees F. In bowl, combine blueberries, sweetened condensed milk and lemon peel. In large bowl, cut 3/4 cup butter into 1 1/2 cups biscuit mix until crumbly; stir in blueberry mixture. Spread in greased 9-inch square baking pan. In small bowl, combine remaining 1/2 cup biscuit mix and brown sugar; cut in remaining 2 tablespoons butter until crumbly. Add nuts. Sprinkle over cobbler. Bake 65 to 70 minutes. Serve warm with vanilla ice cream and Blueberry Sauce. Store leftovers covered in refrigerator. Blueberry Sauce: In saucepan, combine sugar, cornstarch, cinnamon, and nutmeg. Gradually add water. Cook and stir until thickened. Stir in blueberries; cook and stir until hot.