BEST EVER Clean Eating Meatloaf Recipe!

Name: BEST EVER Clean Eating Meatloaf Recipe!
Cuisine: American
Ingredients: 1.5 ground turkey, or lean grass-fed ground beef; 1 whole large egg; 1/2 cup finely diced yellow onion; 1/2 cup finely diced celery; 1/4 cup unsweetened almond milk, unsweetened cashew milk, or grass-fed dairy milk; 1/2 cup uncooked (dry) old-fashioned rolled oats; 1/4 tsp garlic powder; sea salt and pepper to taste (1/4-1/2 teaspoon each); 1.5 Tbsps regular mustard; 1/4 cup no-sugar-added organic ketchup