French Onion Tomato Soup combines two favorites in an easy to make, delicious tomato soup. Tomatoes, sweet onion, butter and broth blend together in this flavorful homemade tomato soup recipe perfect for weeknight dinner.
Add the onion, garlic, thyme and 1/4 cup water to a hot pan. Cook over medium-high heat for 15 minutes, stirring occasionally and adding an additional 3 TBSP water every 4-5 minutes. Onions should caramelize and turn dark brown in color.
Add in butter, tomatoes, broth and brown sugar. Cook on medium heat until bubbling, then decrease heat and simmer for 20 minutes.