Ingredients
1 1/2 lbs ground chuck
1/2 c minced onion
2 tbsp minced fresh basil
1 tbsp balsamic vinegar
1/2 tsp salt
1/2 c mayonnaise
2 tbsp basil pesto
5 ciabatta buns, split and toasted
2 c shredded romaine lettuce
roma tomato, thinly sliced
5 slices provolone cheese
In a alrge bowl, combine ground chuck, onion, basil, vinegar and salt. Shape mixture into 5 patties.
Preheat grill to medium-high heat (350˚ to 400˚). Grill patties, covered, for 7 to 8 minutes per side or until desired doneness.
In a small bowl, combine mayo and pesto. Spread desired amount of mixture evenly over bottom halves of buns. Top each evenly with shredded lettuce, tomatoes, patty and cheese slice. Cover with ciabatta bun tops.