1-Preheat your oven: Start by preheating your oven to 350°F (175°C) and greasing an 8×8 inch baking dish with butter or a non-stick spray to keep things from sticking.

2-Prepare the filling: Next, in a bowl, combine the chopped apples, 2 tablespoons granulated sugar, 3/4 teaspoon ground cinnamon, and 1 1/2 teaspoons lemon juice; mix well and spread this filling evenly in the prepared baking dish.

3-Make the topping: In a separate bowl, mix together 1 cup light brown sugar, 3/4 cup old fashioned oats, 3/4 cup all-purpose flour, 1 teaspoon ground cinnamon, and a pinch of kosher salt to create your topping base.

4-Add butter to topping: Then, add 1/2 cup of cold unsalted butter, diced into small cubes, to the dry topping mixture and cut it in using a pastry cutter, two forks, or your hands until it resembles coarse crumbs.

5-Assemble and bake: Sprinkle this topping mixture evenly over the apples in the baking dish and pat it down gently for an even layer. Bake for 40 to 50 minutes, or until the topping turns golden brown and the filling bubbles up nicely remember, ovens vary, so keep an eye on it.

6-Cool and serve: Once done, let it cool slightly before serving warm, perhaps with a scoop of vanilla bean ice cream for that extra delight.