3 apple gruyere toast red onion Recipes

thick slices challah bread from middle of loaf, grated gruyere cheese (about 3/4 cup), red onion, very thinly sliced, eggs, lightly beaten, whole mil 1/4 tsp kosher salt, ground black pepper, extra virgin olive oil, apple, cored, quartered and very thinly sliced, fried eggs , for serving, optional

whole wheat bread, toasted and crusts removed, mayonnaise, minced red onion, chopped fresh parsley, granny smith apple, peeled, cored, and finely diced, tabasco sauce (a few drops or to taste), salt, pepper, lump crabmeat (or three 6 oz. cans water-packed tuna, drained), shredded gruyere cheese