Impossible Pie

4 eggs
1/4 cup (1/2 stick) margarine
2 cups milk
3/4 cup granulated sugar
1/2 cup biscuit mix
3/4 teaspoon baking powder
1/8 teaspoon salt
1/2 cup coconut (optional)

Mix all ingredients in a blender for 30 seconds. Pour into a greased and floured 10-inch pie pan. Bake at 350 degrees F for 45 minutes or until brown. Nutmeg may be added if desired.