Preheat oven to 350°F. Spray 13x9-inch baking dish with cooking spray and set aside
In a large skillet, heat olive oil and add onion slices.
While onions are cooking, separate the biscuits and cut each one into 6 pieces.
Once onions are nice and caramelized, add in the diced jalapeno.
Sprinkle in the flour, stir well.
Slowly pour in milk, stir well.
Add in BBQ sauce, stir well.
Add in diced chicken and diced apple, stir to coat.
Carefully pour the BBQ chicken mixture into prepared baking dish. Stir again if needed.
Top with biscuit pieces.
Sprinkle on cheddar cheese.
Bake for 25 - 30 minutes until top of biscuits are golden brown.
Enjoy!