In a large bowl, combine all ingredients. Shape ground beef mixture into 2 loaves; place on a parchment-lined jelly-roll pan. Bake in a preheated 350° oven until an instant-read meat thermometer inserted in the center of each loaf reaches 160° (about 60 min.). Let stand on counter, covered, 5 min.; cut into 1" thick slices.
Nutrition Information Per Serving:
Total Calories: 310
Total Fat: 13 g
Saturated Fat: 5 g
Sodium: 415 mg
Fiber: 3 g
Each serving also contains nearly 40% of the daily recommendation for these immune-boosting nutrients: vitamins A, C and B12, plus iron, selenium and zinc.