Start by removing the sausage from its casing and crumbling it into the bottom of your crockpot, spreading it out evenly.
Set the crockpot to low and cook the sausage for about 10 minutes, stirring occasionally until it’s browned and releases a savory aroma.
Add diced onions, thickly sliced carrots, and minced garlic to the sausage, stirring gently to combine. Cook for another 5 minutes until the vegetables soften slightly and fill your kitchen with a fragrant, savory smell.
Pour in the fire-roasted diced tomatoes, then add the broth until the ingredients are submerged by about an inch. Stir everything together to combine the flavors.
Season the mixture with salt, pepper, dried thyme, and smoked paprika if using. Cover the crockpot with its lid and set it to low to cook for 4 to 6 hours, allowing the flavors to meld beautifully.
Halfway through the cooking time, taste the broth and adjust seasonings if needed. The soup should be gently simmering, with the sausage fully cooked and vegetables tender.
In the last 30 minutes, stir in chopped greens like kale or spinach. Let them wilt into the hot broth, adding a vibrant pop of color and a slight bitter contrast.
Once everything is tender and flavorful, turn off the crockpot and let the soup sit uncovered for about 10 minutes to deepen the flavors and allow the steam to escape.
Use a ladle to serve the hearty soup into bowls, making sure to include a good mix of sausage, vegetables, and greens. Enjoy the warm, smoky aroma and comforting texture of this simple dish.