Peel and chop the apples. If you want to slice them, that will work too.

Preheat oven to 350 F.

Grease an 8x8 baking dish.

In a mixing bowl, combine apples, sugar, 1 tsp cinnamon, and lemon juice then transfer to the baking dish.

Next, we prepare the crisp topping. Dice or grate the butter to make it easier to work with. In a new mixing bowl, combine brown sugar, oats, flour, 1 tsp cinnamon, salt, and butter. Work the mixture until you have crumbed the butter with the other ingredients.

Evenly spread the topping over the apples in the baking dish.

Bake for 45 minutes.