6 grilled ham cheese caramelized onion Recipes

onion, very thinly sliced, sugar, salt , pinch, spicy brown mustard, horseradish, honey, light whole wheat bread, light ham, gruyere cheese

extra-virgin olive oil, onion, thinly sliced, unsalted butter, room temperature, thick slices country white bread or sourdough bread, sliced smoked ham, divided, gouda cheese, thinly sliced, divided, handfuls frisee , torn into bite-size pieces (about 1 cup), divided

extra virgin olive oil, onion, thinly sliced, unsalted butter, room temperature, country white bread or 4 slices sourdough bread, 1/3-inch-thick, smoked ham, thinly sliced, divided, gouda cheese, thinly sliced, divided, frisee , torn into bite-size pieces (about 2 large handfuls)

unsalted butter, olive oil, onion, halved and thinly sliced (sweet ), salt & freshly ground black pepper, to taste, tomatoes, halved and seeded or 2 sun-dried tomatoes packed in oil, drained and patted dry, canola oil (if roasting tomato), salt & freshly ground black pepper, to taste, mayonnaise, garlic cloves, chopped, white wine vinegar, fresh thyme leaves or 1/2 tsp dried thyme, good quality white bread, cut into 1/4-inch thick slices (pullman loaf), grated gouda cheese, prosciutto, sliced about 1/8-inch thick, unsalted butter, at room temperature or 8 tbsp olive oil