-
1
For the burgers: Preheat a gas or charcoal grill to high heat.
-
2
In a large bowl, mix together beef, sausage, salt and vinegar.
-
3
Shape into 5-6 patties and use your thumb to create a small well in the center of each one.
-
4
Place patties directly on the hottest part of the grill and grill uncovered for 5-6 minutes or until juices begin to appear at the top of the burger.
-
5
Flip burgers and cook an additional 4-5 minutes on the opposite side.
-
6
Add cheese slices during the last few minutes of grilling.
-
7
Remove from the grill onto a platter and allow to rest for a few minutes.
-
8
Meanwhile, for the bread: Preheat oven to 450 F. Use a pastry brush to brush both sides of the bread slices with olive oil.
-
9
Place on a baking sheet in the preheated oven and bake for 5-8 minutes, or until bread is golden brown and crisped.
-
10
Remove from oven when done.
-
11
For the glaze: In a small saucepan, heat balsamic vinegar over medium high heat.
-
12
Whisk often.
-
13
Once the vinegar begins to boil, sprinkle in sugar.
-
14
Whisk constantly to prevent burning.
-
15
Cook until reduced by half and mixture is thick and syrupy.
-
16
Set aside to cool slightly.
-
17
To assemble: Stack burgers, tomato, and basil leaves on a slice of bread.
-
18
Drizzle with balsamic glaze then finish with the second slice of bread.
