For the apples:
1 cup Domino brown sugar
1/2 cup Domino granulated sugar
5 large apples, peeled and cut into chunks
1/4 teaspoon salt
1 teaspoon McCormick cinnamon
For the topping:
2/3 cup Quaker oats
2/3 cup loosely packed Domino brown sugar
1/4 cup Gold Medal flour
1/2 teaspoon McCormick cinnamon
3-4 tablespoons Land O’ Lakes softened butter
1 teaspoon McCormick vanilla extract
In a mixing bowl, combine brown sugar, granulated sugar, apples, salt, and cinnamon. Spread onto bottom of slow cooker.
Mix your crumble topping ingredients until it comes together. Sprinkle it over top of the apples. Cook on low for 4 hours, or high for 2 hours.
Turn off heat and let sit, covered, for one hour to let the caramel thicken