Being the onion lover that I am, it dawned on me that I had never made mashed potatoes with caramelized onions. No idea why. It seemed like the perfect accompaniment to the Shallot and Apple Stuffed Bacon Chicken that I slow-cooked on the BGE. I could almost imagine the characteristic taste the sweet caramelized onions would add to the fluffy mashed potatoes, and the fantastic scent that would arise would…