Slow Cooker Tomato Basil Soup
Ingredients
- 2 cans (14-ounces each) petite diced tomatoes, undrained
- 1 cup finely diced celery
- 1 cup finely diced carrots
- 1 cup finely diced onions
- 1 teaspoon dried oregano
- 1 tablespoon dried basil
- 4 cups low-sodium chicken broth
- 1 bay leaf
- ¼ cup butter
- ½ cup flour
- 1 cup freshly grated Parmesan cheese
- 2 cups fat free or regular half-and-half, lightly warmed
- 1 teaspoon salt
- ½ teaspoon black pepper
- Croutons for serving
Instructions
- In a 5-quart slow cooker, combine the tomatoes, celery, carrots, onions, oregano, basil, broth, and bay leaf. Cover and cook on low for 5-7 hours until the vegetables are tender.
- About 45 minutes before serving, melt the butter over low heat in a medium saucepan. Add the flour and cook, stirring constantly, until the mixture is golden, about 3 minutes. The mixture will be crumbly, but that's ok.
- Whisking constantly, slowly ladle in 1 cup (or a ladleful) of the hot soup from the slow cooker. Whisk until smooth and bubbly. Add another cup or ladleful and stir again until smooth. Add another cup or two and stir until smooth.
- Stir the creamy, hot mixture back into the slow cooker. Add the Parmesan cheese, half-and-half, salt and pepper, adding more salt and pepper if needed.
- Cover and cook on low for 30 minutes until ready to serve (at this point, you can blend for smoother texture, if desired). Serve with homemade croutons, if desired (and trust me, you'll want to desire it).
Notes
Tomatoes: you can use regular diced tomatoes if you don't have or can't find petite diced, but if you have the option, go for the petite diced. The smaller size of the tomatoes meshes better with the finely diced vegetables.