
Combine eggs, milk, bread crumbs, onion, salt, sage, fennel, and mushrooms in a large bowl. Break up ground turkey over mixture and stir well to combine.
Shape into a round loaf; place in a 5-quart slow cooker. Cover and cook on low until a meat thermometer reads 165°F, 5–6 hours. (Or, if desired bake in 350°F oven [325°F for a convection oven] for 35–45 minutes until meat reaches an internal temperature of 165°F.)
Whisk ketchup, brown sugar, mustard, and Worcestershire sauce in a small bowl; spoon sauce over meat loaf. Return to slow cooker and cook on low until heated through, about 15 minutes. Let stand 10 minutes before cutting.
8 servings
4 oz
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.