Leftover Turkey Hot Brown Sandwich - Traeger Grills

Ingredients

• 4 Tablespoon unsalted butter
• 1/3 Cup all-purpose flour
• 4 Cup whole milk
• 1/4 yellow onion
• 2 whole cloves
• 1 Bay Leaf
• 2 Ounce Gruyère, grated
• 2 Ounce Parmesan, grated (about ½ cup), divided
• 8 Slices bacon
• 12 Ounce sliced turkey, preferably leftover from a roast turkey
• 2 plum tomatoes, sliced ¼-inch thick
• 4 Slices Texas toast bread or other thick white bread