In a medium (10-inch) skillet over medium-high heat, heat the brown sugar and stir constantly using a rubber spatula until clumps are formed. Add the butter and continue to stir until everything has melted and become a dark 'amber-like' color. Continue to stir consistently until fully melted and bubbly, about 2-3 minutes.
Now, slowly whisk in the heavy cream and continue to whisk until combined and the sauce has fully thickened. Remove from heat and allow to cool slightly before using.
TO MAKE THE FILLING:
In a large bowl, add the sliced apples, brown sugar, cinnamon, nutmeg, allspice, vanilla, and salted caramel sauce, stirring everything together until combined and the apples are completely coated.
TO MAKE THE TOPPING:
In a bowl, add the flour, oats, brown sugar, and cinnamon, stirring until combined. Add the melted butter and using a spatula, mix until combined and 'crumbly-like'.
ASSEMBLY:
Preheat your oven to 375 degrees Fahrenheit.
Spoon the coated apples into the bottom of your greased standard square baking dish or skillet and top with topping mixture. Bake for about 35-40 minutes or until apple filling becomes bubbly and topping is golden brown.
Once fully baked, remove from oven and let it cool for 5 minutes or so. Serve warm and enjoy with a scoop of your favorite ice cream or Coolwhip!
Bon Appetit!
Notes
STORAGE: Best if served on the same day of making crisp. If made ahead of time (a few hours before serving), simply re-warm in the oven at 375 degrees Fahrenheit. Leftovers should be stored in an air-tight container in the refrigerator for 1-2 days.
STORAGE (CARAMEL SAUCE): Leftover caramel sauce can be stored in a tightly sealed mason jar for up to two weeks. When ready to use, simply reheat sauce in the microwave at 15 second intervals until softened and at room temp.
APPLES: Best apples to use for this crisp are: Granny Smith, Gala, Honeycrisp, Fuji, etc.
GLUTEN-FREE OPTION: To make this crisp GF, simply substitute the flour with GF All-Purpose flour or 1-to-1 GF Baking Flour, which Bob's Red Mill has a great one! Ensure that other ingredients are GF-friendly (i.e. stock, etc.). Also, ensure that the rolled oats are certified-GF.