Question 1

Is French onion soup keto?

Accepted Answer

Traditional French onion soup uses a baguette, which adds a lot of carbs. This version keeps it keto by using low-carb bread or a cheese crisp on top while keeping the broth, onions, and cheese classic.

Question 2

How many carbs are in a serving?

Accepted Answer

It varies by brands and bread choice, but a typical serving with low-carb toast lands around 7–10 net carbs. Skip the bread and use a parmesan crisp to lower it further. Always check your broth and Worcestershire labels.

Question 3

Can I make it dairy-free?

Accepted Answer

You can caramelize onions in olive oil only and skip the cheese topping. For richness, add a splash of coconut cream at the end, though the flavor will be less traditional.

Question 4

What onions work best for French Onion Soup?

Accepted Answer

Yellow onions are the classic choice for balance and sweetness. White onions can be sharper, while sweet onions caramelize faster but may make the soup taste too sweet. Stick with yellow for best results.

Question 5

What if my onions won’t brown?

Accepted Answer

They may be crowded or the heat may be too low. Use a wide pot to increase surface area and let moisture evaporate. Add a pinch of baking soda only as a last resort—it speeds browning, but a tiny amount goes a long way.

Question 6

How do I thicken the soup without flour?

Accepted Answer

French onion soup is traditionally broth-forward. For a slightly richer body, simmer longer to reduce, or whisk in a small knob of butter at the end.