Prep: Preheat the oven to 350℉. Butter a 10-inch oven-safe skillet or similar size baking dish. Nonstick spray works too.
Slice Apples: Peel and slice your apples into 1/4" thick slices. If you want crisp tender apples, slice them a bit thicker.
5 medium apples
Make the Filling: Toss together all filling ingredients in the greased skillet. Be sure to get everything mixed up really well so there aren't clumps of sugar hiding in bottom. Set aside.
1/2 cup + 1 tbsp brown sugar , 1/4 cup granulated sugar , 3 tbsp all-purpose flour , 2 and 1/4 tsp cinnamon, 1/2 tsp nutmeg, 1/4 tsp ground cloves, 1/8 tsp allspice, 1/2 tsp vanilla extract , 2 tbsp apple cider, 1 tbsp lemon juice
Make the Topping: In a medium mixing bowl, whisk together the flour, brown sugar, salt, cinnamon, and oats. Cut in the cold butter with a pastry cutter until you have little pea-sized pieces of butter and smaller throughout, coated in the flour. See photos above.
1 cup + 2 tbsp all-purpose flour , 1 cup brown sugar, packed, 1/2 tsp salt, 1 tsp cinnamon, 2 cups old-fashioned whole rolled oats, 1 cup salted butter cubed
Assemble: Give the apple filling one more good stir, and then evenly pour the crisp topping over the top of the apples.
Bake: Bake for 55 to 63 minutes, or until the top is deeply golden brown and the filling is very bubbly and looks thickened. You can also stick a fork into the center of the crisp to check an apple piece - if you can pierce the apple easily, it's tender and done.
Serving + Storing: Serve warm with vanilla ice cream! Store leftovers in the fridge, covered, for up to 4 days.