- 1 tablespoon olive oil
- 1 pound ground beef
- 1 tablespoon Worcestershire sauce
- 1 teaspoon granulated garlic or garlic powder
- Kosher salt and freshly cracked black pepper
- 1 yellow onion, diced
- 1/2 green bell pepper, roughly diced
- 1/2 red bell pepper, roughly diced
- 2 tablespoons unsalted butter
- 1 cup beef stock
- 5 ounces provolone cheese (7 to 8 slices)
- 4 to 6 potato hamburger buns, buttered and toasted
- Pickled banana peppers, for serving
- Sweet potato fries, for serving
- Heat the oil in a large skillet with a lid over medium-high heat. Add the ground beef and break it up with the back of a wooden spoon. Sprinkle the Worcestershire, granulated garlic, 1/2 teaspoon salt and some pepper over the beef. Cook, stirring and breaking the beef up frequently, until it is no longer pink and develops a deep brown crust, about 6 minutes. Add the onion and bell peppers. Add the butter and cook, stirring frequently, until the onions and peppers are softened and browning on the edges, about 5 minutes. There should also be browning forming on the bottom of the skillet. Pour the stock into the skillet, a little at a time, scraping up any browned bits. Bring everything to a simmer, reduce the heat to medium, cover and cook until the sauce reduces and thickens slightly, 6 to 8 minutes.
- Turn off the heat and lay the cheese slices directly onto the beef mixture in a single layer. Cover and let the cheese melt completely, about 1 minute. Stir the cheese to slightly incorporate. Scoop the meat and cheese onto the buns and top with banana peppers. Serve with fries.