BBQ Sweet Potato and Apple Casserole is a unique dessert that combines grilled slices of sweet potato and apples, and is then topped with a pecan crumble.
Preheat the grill to 450 degrees F (230 degrees C).
Toss the sweet potatoes with half the oil, salt, and pepper. Place on the grill and cook for about 8 minutes. Turn 45 degrees and cook for 6 more minutes. Flip and cook for an additional 8 minutes. Remove from the grill.
Repeat the process with the apple slices, cooking for a shorter period of time.
Reduce the grill temperature to 350 degrees F (175 degrees C).
In a large bowl, combine the cream, syrup, cinnamon, and nutmeg.
In a small bowl, combine the pecans, butter, sugar, and flour to form a crumble.
Pour a little bit of the cream mixture into the bottom of a 9-inch (23cm) square baking dish. Arrange a layer of sweet potatoes and apples, then more cream over the top. Repeat these layers until the pan is full.
Crumble the pecan mixture over the top.
Bake on the grill until the apples and sweet potato are cooked through as well as the top being nicely browned About 45 minutes of cook time. Serve warm.