2 tablespoons olive oil, divided
2 cups thinly sliced red onions
1 1/2 teaspoons golden brown sugar
2 tablespoons balsamic vinegar
Pinch of dried crushed red pepper
sliced or shredded mozzarella or ricotta(we thought a little Parmesan would also be a good addition)
6 to 8 thin slices prosciutto
baguette
Heat 1 tablespoon oil in large nonstick skillet over medium-high heat. Add onions and sugar. Cook until dark brown and tender, stirring frequently, about 16 minutes. Mix in vinegar and crushed pepper. Cook until mixture is thick, about 1 to 2 minutes more. Season marmalade generously to taste with salt and pepper.
Meanwhile, set oven to low broil. Thinly slice baguette and brush with remaining 1 tablespoon of oil; sprinkle with salt. Spread onion marmalade over the bread, dollop cheese all over the onion layer and top with slices of prosciutto. Broil until caramelized and crusty.
