Ingredients
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4 pre-formed hamburger patties
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1 medium yellow onion, sliced
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4 whole-wheat sandwich thins, split
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1 large tomato, thinly sliced
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4 leaves green leaf lettuce
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Ketchup, for garnish
Steps
1
Set grill to medium. Season the hamburger patties with salt and pepper. Place on grill and cook 3 min. per side, until desired doneness.
2
Meanwhile, grill the onion slices 2 min. per side, until golden. Toast the buns on the grill 1–2 min.
3
Place 1 patty on each sandwich thin bottom. Top with the grilled onion, lettuce, tomato, and ketchup. Add sandwich thin tops.
