Heat two skillets over low heat. Add one tablespoons each of olive oil and butter to both skillets. To one skillet, add diced onions with a pinch of salt. Stir to coat. Cover and cook over low heat for about 15 minutes, stirring occasionally to ensure the onions don’t burn. Remove lid and add honey, tossing to coat and cook for another 10-15 minutes, until completely caramelized. Once caramely, set aside.

In the meantime, add the chopped mushrooms to the skillet, tossing to coat. Cover and cook for 15-20 minutes, stirring once or twice. Add in garlic and cook for 5 minutes more. Remove from heat and season with a pinch of salt and pepper. Set aside.

Cook hot dogs as desired: either grilled or in a skillet over medium heat until browned. Place each hot dog in a bun and top with an equal amount of grated cheese. Place hot dogs under the broiler (or even back on the grill) for a minute or two just until the cheese is melted. Top with ketchup, mustard and relish, then add mushrooms, onions and bacon. If not serving immediately, wrap in aluminum foil tightly. They can be reheated this way too!