Preheat the oven to 350°F.
In a mixing bowl, prepare the crumble by combining the flour, brown sugar, cinnamon, and salt. Mix with a fork until well blended.
Add the cubed butter to the dry mixture. Use a fork or pastry cutter to mix the butter into the dry ingredients until it forms a crumbly texture. Set aside.
In a baking dish, add the can of apple slices. Cut the cinnamon rolls into pieces and add them to the dish as well, setting aside the icing for later.
Stir the apples and cinnamon roll pieces together until evenly distributed in the dish.
Pour the heavy cream evenly over the apple and cinnamon roll mixture.
Sprinkle the crumble topping over everything and bake for 50-55 minutes, until the crumble is golden brown and the cinnamon rolls are fully cooked.
Melt the reserved icing in the microwave and drizzle it over the baked crumble.