Deeply browned onions.
Bubbling Gruyère.

Next: ingredients
for four bowls.

4 medium yellow onions (about 2 lb/900 g)
3 tbsp unsalted butter · 1 tbsp olive oil
1 tsp kosher salt, plus more to taste
½ cup dry white wine
6 cups low-sodium beef broth
2 fresh thyme sprigs · 1 bay leaf
¼ tsp black pepper
8 baguette slices (about 4 oz/113 g)
1½ cups grated Gruyère (about 6 oz/170 g)

Large heavy-bottomed pot
Sharp knife and cutting board
Wooden spoon · box grater
Measuring cups and spoons
Ladle · baking sheet
4 oven-safe soup crocks
Oven mitts

Peel, halve, and slice the yellow onions pole-to-pole into 1/4-inch half-moons.

Visit the recipe for all instructions.