1/4 cup olive oil
2 shallots, sliced
1 tablespoon minced garlic
2 cups sliced cremini mushrooms
Dash balsamic vinegar
1/4 cup beef broth
1/2 cup mascarpone
3 tablespoons chopped chives
Pinch salt
Pinch cracked black pepper
2 pounds ground beef
4 teaspoons steak seasoning (recommended: Montreal)
8 slices smoked Cheddar
4 large seeded hamburger buns, split and toasted
Dijon mayonnaise blend, for garnish (recommended: Dijonnaise)
1 cup french fried onion pieces