Meatless Cheeseburgers with Tangy Tomato Jam Recipe | RAGÚ

Ingredients

• 2 tablespoons olive oil
• 1 tablespoon butter
• 1 large yellow onion, halved, thinly sliced (about 3 cups)
• 1/4 teaspoon each kosher salt & ground black pepper
• 1/4 cup balsamic vinegar
• 1 jar (24 ounces) RAGÚ SIMPLY® Traditional Sauce, divided
• 8 plant-based refrigerated burger patties (1/4 pound each)
• 8 slices Colby-Jack cheese
• 8 hamburger buns, split, toasted
• 2 cups loosely packed baby arugula