Preheat oven to 350 degrees F. Line a baking sheet with foil and lightly spray with non-stick cooking spray; set aside.
In a small sauce pan add all the glaze ingredients and whisk to combine. Remove a 1/4 cup and place in a small bowl; set aside for later. Simmer remaining glaze over medium heat until slightly thickened, about 5 minutes. Remove from heat and cover to keep warm.
Heat oil in a skillet over medium-high heat. Add onions and cook until golden, about 7-9 minutes. Add garlic and cook for one more minute, making sure to stir constantly so you don't burn the garlic. Remove from heat and transfer to a large bowl. Set aside and let cool.
In a food processor add crackers and milk. Process until smooth. Add the beef and turkey. Pulse until well combined. If you can't get it all combined, don't worry. You can do some by hand later on.
Transfer meat mixture to the cooled onion bowl. Add the eggs, egg yolk, mustard, Worcestershire sauce, thyme, parsley, salt and pepper. Mix throughly with your hands. Hands work best for this method.
Turn your oven to the high broil setting.
Place meat mixture onto prepared baking sheet. Spread and pat meatloaf into a 9x5 inch loaf. Place meatloaf in the oven on the top rack and broil until well browned, about 5 minutes.
Brush 2 tablespoon of reserved glaze onto the meatloaf and boil for another 2 minutes.
Transfer meatloaf to the middle of the rack. Brush with remaining reserved glazed. Return oven temperature to Bake at 350 degrees F.
Bake meatloaf for 40-45 minutes, until cooked through.
Remove from oven, cover lightly with foil tent and let rest 20 minutes.
Slice into pieces and smother with cooked warm glaze.
Serve & Enjoy!!