01 - Preheat oven to 350°F.
02 - In a large bowl, mix sliced apples with granulated sugar, 1 teaspoon cinnamon, lemon juice, and 2 tablespoons flour until evenly coated.
03 - Transfer the apple mixture into a greased 8x8-inch baking dish, spreading it evenly.
04 - In another bowl, combine granola, rolled oats, brown sugar, 1/4 cup flour, 1/2 teaspoon cinnamon, and salt. Stir in melted butter until mixture is crumbly and well blended.
05 - Evenly sprinkle the granola mixture over the apples.
06 - Bake for 40 minutes, or until topping is golden brown and apples are tender and bubbling.
07 - Allow crisp to cool for at least 10 minutes before serving. Serve warm, optionally with vanilla ice cream or whipped cream.