Yield: 4 servings
Ingredients
- 3 tbsp avocado oil (or similar)
- 6 large red or yellow onions, peeled and thinly sliced
- ¾ tsp salt (or more, to taste)
- 8 cups vegetable broth
- 1 cup dry white wine (or reserve 1 C extra vegetable broth)
- 1 tbsp bouillon: vegetable, mushroom, or garlic
- 1 tbsp Worcestershire sauce
- 1 tbsp flour
- 0.50 tsp black pepper (more to taste)
- French bread cut into 8-12 ½” slices
Directions
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In a heavy pot over medium heat, heat oil, then add onions and ½ t salt, stir, and cover. Let onions soften for about 5 minutes.
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Remove lid and allow onions to caramelize until golden brown over medium heat, stirring occasionally. Adjust heat if onions are browning too quickly. This step takes a long time (45-60 minutes or more) depending on your stove. It’s worth it!
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While onions caramelize, warm 8 C. broth, bouillon, and Worcestershire sauce in a saucepan over low heat.
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While onions caramelize, warm 8 C. broth, bouillon, and Worcestershire sauce in a saucepan over low heat.
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Stir in flour and let thicken for a minute or two, stirring constantly.
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Slowly add warm broth, ¼ t salt, and the pepper to the onion mixture. Boil uncovered for 10 minutes.
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Adjust salt and pepper to taste.
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Toast French bread. Ladle hot soup into large mugs, then top each with bread slices. Serve immediately.
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ALTERNATIVE METHOD: in slow cooker, toss together onions, oil, and ½ t salt. Cover and cook on HIGH for 7-9 hours.