Inside Out Burger with Worcestershire Tomato Ketchup

The inside-out burger flips classic burger architecture by tucking all the good stuff inside the patty instead of stacking it on top. Two thin rounds of ground chuck sandwich a layer of Swiss cheese, a smoky bacon-chorizo-onion mixture, and another slice of cheese, then get sealed into one thick patty.

The filling does double duty. As the burger cooks, the bacon and chorizo render their fat into the meat from the inside, while the Swiss melts into a molten pocket that bursts the moment you cut in.

The technique that keeps these from drying out is the two-stage cook: a quick sear on each side in a hot pan, then a covered finish in a low oven. The gentle heat brings the center up to temperature without overcooking the outside. Serve on toasted whole-wheat buns with the homemade Worcestershire tomato ketchup that follows the recipe.

Pro Tips

• Seal the edges firmly. Pinch and press all the way around so the cheese doesn’t leak out during cooking.
• Let the bacon-chorizo filling cool fully before stuffing. Hot filling melts the cheese prematurely and turns the assembly slippery.
• Don’t press the patties with a spatula while they cook. That squeezes out the juices and the molten cheese center you worked to build.
• Use 80/20 ground chuck minimum. Leaner beef won’t stay juicy through the longer cook time.

Variations

• Swap Swiss for sharp cheddar or pepper jack for a sharper or spicier melt.
• Use Spanish chorizo (cured, sliced thin) instead of Mexican fresh chorizo for a smokier, drier filling.
• Stuff in a tablespoon of caramelized onions along with the bacon mix for extra sweetness.