1cupshredded Gruyère cheeseor a dairy-free alternative if needed
Instructions
Caramelize The Onions
Melt the butter in a large pot over medium heat. Add the sliced onions and sprinkle with salt. Stir occasionally, letting the onions cook down until they turn a deep golden brown. This process takes about 30-40 minutes but is key to achieving that rich flavor. Add the sugar if needed to help caramelize.
Deglaze The Pot
Once the onions are caramelized, pour in the white wine to deglaze the pot. Scrape the bottom of the pot with a wooden spoon to release the browned bits. Let the wine simmer until it’s mostly evaporated.
Simmer The Soup
Add the broth, thyme, bay leaf, and black pepper. Bring the mixture to a boil, then reduce the heat to low and let it simmer for 20 minutes. Remove the bay leaf before serving.
Prepare The Bread
While the soup simmers, toast the gluten-free bread slices. If you’re using a broiler-safe option, top the bread with shredded Gruyère cheese and place it under the broiler until melted and bubbly.
Serve
Ladle the soup into bowls, place a cheesy bread slice on top of each bowl, and serve immediately. If you don’t have broiler-safe bowls, you can serve the cheesy bread on the side.