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1
Preheat oven to 425 degrees F (220 degrees C).
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2
Heat 1 tablespoon olive oil in a skillet over medium heat. Cook and stir onion in hot oil until onion has softened and turned translucent, about 5 minutes. Reduce heat to medium-low and continue cooking and stirring until the onion is crisp and dark brown, 15 to 20 minutes more. Remove from heat and set aside to cool; chop into small pieces and place into a large bowl.
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3
Heat remaining 2 tablespoons olive oil in the same skillet over medium-high heat. Add carrots and mushrooms, season with kosher salt and ground black pepper to taste, and cook and stir until carrots start to soften, about 7 minutes. Stir in garlic and cook for another 3 minutes; remove from heat, add artichoke hearts, and set aside and let cool. Transfer vegetables to the bowl with onion.
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4
Mix in feta cheese, bread crumbs, egg, milk, Worcestershire sauce, turkey, parsley, and thyme; season with Italian seasoning and Creole seasoning. Adjust salt and pepper if desired. Thoroughly mix turkey mixture with hands and form into a meatloaf; place loaf on a baking sheet.
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5
Bake meatloaf in preheated oven until no longer pink inside and the juices run clear, 40 to 45 minutes. Combine tomato sauce, balsamic vinegar, and honey to make the glaze; remove meatloaf from the oven, coat with glaze, and bake until glaze has cooked onto the loaf, 5 to 10 more minutes.
