Cut the onions into ¼ inch slices. Add the butter and olive oil in a skillet set over medium heat and once heated add in the sliced onions. Allow them to cook down and caramelize for about 40 minutes while stirring every few minutes (Reduce heat if necessary). Once the onions caramelize, remove from skillet and set aside.
Add the butter in a skillet over medium heat, then add in the flour whisking non-stop for about 2 minutes.
Gradually add in the heavy cream while stirring non-stop, then add the milk in the same manner.
Add thyme, garlic powder, mustard powder, and hot sauce and let the mixture reach a boil, then reduce heat to simmer.
Cook the mini pasta shells until al dente (don’t overcook it). Drain.
Lower the heat of the sauce and gradually add in the cheese while stirring to incorporate. Add the caramelized onions if you choose to make them alongside the cooked pasta. Using a spatula mix everything gently to ensure it’s combined.
Roughly chop the smoked turkey, stir some of it in the pasta and sprinkle the rest on top. Garnish with parsley and serve right away. Enjoy!
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