12 Ingredients
  • 1 1/4 pounds ground beef (preferably chuck)
  • Kosher salt and freshly ground pepper
  • 2 teaspoons extra-virgin olive oil, plus more for brushing
  • 1 small red onion, halved and thinly sliced
  • 1 8-ounce package sliced mixed mushrooms
  • 1 tablespoon Worcestershire sauce
  • 1/4 cup ketchup
  • 2 teaspoons dijon mustard
  • 4 thin slices gruyere cheese
  • 4 sesame buns, split and toasted
  • Boston or Bibb lettuce, for topping
  • Potato chips and/or pickles, for serving (optional)
Nutrition
596
30% daily value
4 servings
                                       
                                           
     

Fat

57% 37

Saturated

71% 14

Trans

- 2

Monounsaturated

- 16

Polyunsaturated

- 2

Carbs

10% 30

Carbs (net)

- 28

Fiber

8% 2

Sugars

- 8

Sugars, added

- 0

Protein

70% 35

Cholesterol

39% 116

Sodium

29% 690

Calcium

26% 258

Magnesium

12% 51

Potassium

16% 745

Iron

28% 5

Zinc

66% 7

Phosphorus

60% 418

Vitamin A

5% 48

Vitamin C

5% 4

Thiamin (B1)

34% 0

Riboflavin (B2)

47% 1

Niacin (B3)

65% 10

Vitamin B6

47% 1

Folate equivalent (total)

25% 98

Folate (food)

- 37

Folic acid

- 36

Vitamin B12

140% 3

Vitamin D

77% 12

Vitamin E

6% 1

Vitamin K

6% 8

Sugar alcohols

- 0

Water

- 191
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