→ For the onions
01 -
2 tablespoons olive oil
02 -
4 medium yellow onions, thinly sliced (about 6 cups)
03 -
3 cloves garlic, thinly sliced
04 -
2 bay leaves
05 -
1 1/2 teaspoons kosher salt
06 -
1 teaspoon fresh thyme leaves
07 -
1/2 teaspoon freshly ground black pepper
08 -
1/3 cup dry white wine, such as sauvignon blanc
09 -
2 tablespoons unsalted butter
→ For the meatballs
10 -
1 pound 90% lean ground beef
11 -
1 large egg, beaten
12 -
1/3 cup panko breadcrumbs
13 -
1 teaspoon kosher salt
14 -
1/2 teaspoon freshly ground black pepper
15 -
2 tablespoons olive oil
→ For the sauce and serving
16 -
1 tablespoon all-purpose flour
17 -
2 cups low-sodium chicken broth
18 -
1 teaspoon Dijon mustard
19 -
1 teaspoon Worcestershire sauce
20 -
6 ounces freshly grated Gruyere cheese (about 1 cup)
21 -
Toasted baguette slices, for serving