Simmer: Add the broth, bring to a boil, cover, reduce heat and simmer for 15 minutes. "The Swiss Army Knife for Home Cooks" - Thrillist, https://www.bigoven.com/recipe/vegan-caramelized-onion-and-portobello-mushroom-soup/210049, Get Detailed Nutrition Facts on Any Recipe. Then cook for a few more minutes to thicken. Melt remaining 2 tablespoons butter in same pot over medium-high heat. Stir in onion mixture, then veggie broth and wine. You can also reserve some of the mushrooms for a garnish, or partially blend for a more textured soup. The result is a deeply satisfying, deceptively light, vegan cream of mushroom soup â¦ You will want to adjust the seasonings to taste afterwards. How to make Vegan Cream of Mushroom Soup. How to make vegan mushroom soup. Then cook over medium-high heat for about 10 minutes. Melt butter in a medium pot over medium-high heat. Bring to a boil. Serve and enjoy. In a large pot, saute onions in 1/2 cup of veggie broth or water until they begin to heavily brown. Will forsure make this again! Continue to brown the onions for about 3 â¦ Ingredient notes and substitutions. Add the mushrooms, paprika, dill, salt, and pepper. Mix well. Sign up for FREE and you’ll get 5 days of vegetarian freebies to take your cooking up a notch! And this homemade vegan-ized version is heads above the canned variety that you grew up on.