Ingredients
Directions
Heat the oil and butter in a cast iron, stainless, or aluminum skillet over low heat.
Add the onions and pepper and cook until completely wilted, slowly stirring occasionally, 35 to 40 minutes.
Add the sherry vinegar, stir, and cook an additional 15 minutes or until the onions are a rich caramel color.
Cool, cover, and refrigerate for up to 3 days. Onion confit also freezes well.
Heat oven (and pizza stone if used) to 425 degrees.
Lightly brush the top of your crust with olive oil and place on a sheet pan, pizza stone, or directly on the center oven rack.
Bake crust for 5-6 minutes or until barely brown at the edges.
Sprinkle a very thin layer of shredded cheese over the onions. We used shredded gouda; however, let your palate be your guide. It shoudn't be much, however.
Layer additional ingredients to taste. Our "model" uses prosciutto strips and apple slices. We love ham and figs when in season. Try barely boiled potato slices and bacon crumbles. A mix of sweet, salty, and umami (or meaty) flavors is our goal.
Sprinkle a thin layer of shredded parmesan cheese to finish. Again, substitute to your taste--and what's in the fridge.
Return the flatbread to the oven and bake for approximately 10 minutes on a middle rack until browned to taste.
Remove the flatbread to a board. Drizzle with olive oil, sprinkle with fresh ground pepper, and slice. Top with a handful of arugula (optional).
Serve immediately.