Ohh MAMA!!!!
- 3 pounds yellow onions, peeled, sliced, and cut into quarter-moons
- 2 tablespoons unsalted butter, melted
- 2 tablespoons olive oil
- 2 teaspoons kosher salt, plus more as needed
- Freshly ground black pepper
- 10 cups reduced-sodium beef broth
- 2 tablespoons balsamic vinegar
- 3 tablespoons brandy (optional)
- 4 to 6 toasted baguette slices per bowl
- 1/3 cup grated Gruyère cheese per bowl (1 1/3 to 2 cups total)
- Chopped shallot or fresh onion (optional)