I got this recipe from my aunt when I was a teen and have made these miniature loaves many times since. My husband and three children count this main dish among their favorites. —Kathy Bowron, Cocolalla, Idaho
In a large bowl, whisk egg and milk. Stir in the cheese, oats, onion and salt. Crumble beef over mixture and mix well. Shape into 8 loaves; place in a greased 13x9-in. baking dish. In a small bowl, combine the ketchup, brown sugar and mustard; spoon over loaves.
Bake, uncovered, at 350° for 25-30 minutes or until no pink remains and a thermometer reads 160°.