Apple Crisp with cornstarch

2 cups flour 1 1/2 rolled oats 2 cups brown sugar 2 teaspoons ground cinnamon 1 cup melted butter 4 cups peeled cored sliced apples 1 cup white sugar 2[...]

1/4 cup sugar 1 teaspoon cinnamon 1 tablespoon cornstarch 1 pinch salt 8 cups granny smith apples 1/2 cup brown sugar 2/3 cup oats 1 tablespoon flour 1/4 cup[...]

5 apples 2 cups all-purpose flour 1 cup light brown sugar , packed 1/2 cup rolled oats 1 cup butter , melted 1 cup granulated sugar 3 tablespoons cornstarch 1[...]