Meatloaf Burgers

1. 1

   1. Heat 1 tablespoon of the oil in a large ovenproof skillet over high heat until hot. Reduce the heat to medium; add the onion, celery, and garlic and cook, stirring occasionally, until softened, about 5 minutes. Transfer to a rimmed baking sheet, spreading out the mixture, and place in freezer to cool slightly. Combine the beef, pork, veal, sour cream, bread crumbs, 2 tablespoons of the mustard, the salt, and pepper; stir in the onion mixture. Shape into 6 equal burgers.

2. 2

   2. Heat the remaining tablespoon of oil in the skillet over high heat until hot; reduce the heat to medium and add the burgers to the pan. Cook the burgers for 6 minutes a side or until they are almost cooked through (nice and pink; they should be almost firm to the touch and have very little pink color inside). Transfer the burgers to a rimmed baking sheet.

3. 3

   3. Meanwhile, combine the chili sauce and the remaining 2 tablespoons mustard. Preheat the broiler to high. Spoon the chili sauce over each burger to cover well and place the skillet under the broiler. Broil for 2 minutes or until the topping begins to bubble.

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