Christina's Apple Crumb Pie

from my mom

1 pie crust
7 tart (Granny Smith) apples, peeled and sliced
1/2 C sugar
1 tsp cinnamon
2-3 TBSP flour
1 tsp - 1 TBSP lemon juice

Preheat oven to 400.
Mix all together. Add lemon juice as apples are sliced (sprinkling in occasionally) anywhere from 1 tsp to 1 TBSP. Microwave mixture 7-10 minutes or until apples just begin to change color. While apples cook, place pie crust into deep pie pan. Pour apples into pie crust.

Topping

3/4 C sugar
3/4 C flour
1/2 Butter

Mix flour and sugar together. Cut in butter until crumbly. Sprinkle over apples. Place pie in oven and then lower temperature to 350. Bake 30-45 minutes.