4 cups peeled & thinly sliced tart apples (1 1/2 qt) 
1 TB fresh lemon juice 
3 TB sugar 
1/3 cup flour 
1 cup rolled oats 
1/2 cup firmly packed dark brown sugar 
1 tsp cinnamon 
1/4 tsp salt 
1 stick butter, melted & cooled
In buttered 9" baking dish, combine apples, lemon juice, & sugar. 
In bowl combine flour, oats, brown sugar, cinnamon & salt. Add butter & combine mixture. 
Sprinkle over mixture. Bake.