Deluxe Meatloaf on an Onion Bun

Ingredients

ONION BUN (ENRICHED UNBLEACHED FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, HIGH FRUCTOSE CORN SYRUP, ONIONS, YEAST, SOYBEAN OIL, WHEAT GLUTEN, CONTAINS LESS THAN 2% OF THE FOLLOWING: SALT, POPPY SEED, YELLOW CORN FLOUR, SPICE OILS [TURMERIC AND ANNATTO (IMPARTS COLOR)], VINEGAR, DOUGH CONDITIONERS [MONOGLYCERIDES, SODIUM STEAROYL LACTYLATE, ASCORBIC ACID, CALCIUM SULFATE, ENZYMES], MONOCALCIUM PHOSPHATE, CALCIUM PROPIONATE [PRESERVATIVE]), MEATLOAF (BEEF, PORK, KETCHUP [TOMATO CONCENTRATE FROM RED RIPE TOMATOES, DISTILLED VINEGAR, HIGH FRUCTOSE CORN SYRUP, CORN SYRUP, SALT, SPICE, ONION POWDER, NATURAL FLAVORING], LIQUID EGGS [WHOLE EGGS, WATER, EGG WHITES, SALT, XANTHAN GUM, CITRIC ACID, ANNATTO (COLOR), NATURAL BUTTER FLAVOR (SUNFLOWER OIL, NATURAL FLAVORS, MEDIUM CHAIN TRIGLYCERIDES)], OATS, SEASONING [DEHYDRATED ONION, PARTIALLY HYDROGENATED SOYBEAN AND/OR COTTONSEED OIL, SALT, HYDROLYZED SOY PROTEIN WITH CARAMEL COLOR AND YEAST EXTRACT, SUGAR, HYDROLYZED TORULA AND BREWERS YEASTS WITH HYDROLYZED WHEAT GLUTEN AND CORN PROTEIN, MONOSODIUM GLUTAMATE, SEASONING (DEXTROSE, NATURAL FLAVORING), BEEF EXTRACT, CARAMEL COLOR, FUMARIC ACID], GARLIC POWDER, OREGANO, BLACK PEPPER), CHEDDAR CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, ANNATTO COLOR AND ENZYMES), BACON (BACON CURED WITH WATER,SALT, SMOKE FLAVORING, SUGAR, SODIUM DIACETATE, DEXTROSE, SODIUM ERYTHORBATE, SODIUM NITRITE), DILL PICKLES (CUCUMBERS, WATER, VINEGAR, SALT, ALUM, CALCIUM CHLORIDE, NATURAL FLAVORS, POLYSORBATE 80, YELLOW 5, BLUE 1), RED ONION, ROMAINE LETTUCE.