Blackberry Pie Filling - cooking recipe

Ingredients

2/3 to 3/4 c. sugar (according to berry tartness)
1/4 c. flour
1/2 tsp. cinnamon
1/4 tsp. nutmeg
5 c. blackberries
1 Tbsp. butter
crust for 9-inch pie

Preparation

Mix ingredients well.
Fill pie crust and bake at 425\u00b0 for 50 minutes, then bake 15 minutes longer at 350\u00b0.