Prep
15-30 mins
Cook
15 MIN
Calories
240
Ingredients
1
red onion, cut into 1/2-inch-thick slices
1
tomato, cut into 1/2-inch-thick slices
2 tsp
extra virgin olive oil
1 lb
lean ground beef
1 tbsp
dried oregano leaves
4
American Cheese Slices, halved
8
slider buns, split
2 tbsp
HEINZ Balsamic Vinegar
2 tbsp
fresh lemon juice
24
baby spinach leaves
Instructions
Step 1
Heat grill to medium-high heat.
Step 2
Brush onions and tomatoes with oil. Grill 2 min., turning tomatoes after 1 min. Remove tomatoes from grill. Grill onions 6 min., turning after 3 min. Cool.
Step 3
Meanwhile, mix meat and oregano; shape into 8 (1/2-inch-thick) patties. Grill 3 to 5 min. on each side or until done (160ºF), topping with Singles pieces and adding buns to the grill to toast for the last 2 min.
Step 4
Chop onions and tomatoes; place in medium bowl. Add vinegar and lemon juice; mix lightly. Spoon onto bottom halves of buns; cover with spinach, burgers and tops of buns.