Place lemon juice into a bowl and add sliced red onions.
Cook Beyond Meat patties in skillet over medium heat for 14 min (min 7 min each side). Break apart and set aside.
Slice and chop avocado and tomato.
Take apart romaine lettuce for wraps.
Place 2 tbs cooked meat onto individual lettuce seeds followed by preferred toppings.
Top off with a pinch of salt