Apple Crisp

Name: Apple Crisp
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: American
Ingredients: 6 Granny Smith apples (peeled, cored, and sliced thin but not slivered); ¼ cup all-purpose flour; ¾ cup sugar; ½ cup light brown sugar (packed); 1½ teaspoons cinnamon; 2 teaspoons lemon juice; ¼ cup light brown sugar (packed); ¾ cup old fashioned oats; ¼ cup flour; 1 teaspoon cinnamon; ½ teaspoon nutmeg; 4 tablespoons cold butter (cubed); ¼ cup sugar; ice cream or whipped topping (optional)