Love Patty Melts? This awesome patty melt meatloaf has all the flavors of your favorite patty melt, sauteed onions, rye bread & cheese, all rolled into one!
Heat oven to 350 degrees. Line a rectangular baking dish with foil. Find a baking rack that will fit in your dish and cover that with foil as well. Cut slits in foil to allow grease to drain off.
In a large skillet, heat oil and butter.
Place onion slices in pan and sauté over medium heat for 20-25 minutes, allowing onion slices to soften and turn a beautiful golden brown. Add water a little at a time to help sweat the onions and to keep them from burning.
Remove from heat and drain off excess oil.
In a large bowl, mix ground beef with Worcestershire sauce, seasoning, bread crumbs and egg. Mix well, I like to do this with my hands, then place on cutting board and shape into long rectangle. Pat top flat.
Place onions on top of meat and roll up carefully, patting to keep together as you roll, to make a loaf.
Take a large spatula and lift meatloaf from cutting board and place on covered baking rack.
Place in preheated oven and cook for 50 minutes.
Remove and sprinkle both cheeses all over the top. Return to oven for 10 more minutes.
When done let stand for 5-10 minutes to make it easier to cut.