Pour the broth into the slow cooker and add the minced garlic, thyme, smoked paprika, and a pinch of salt and pepper. Stir to combine the fragrant herbs and spices into the liquid.
Add the chopped carrots to the broth—they'll introduce sweetness and color as they cook.
Gently place the meatballs into the slow cooker, spacing them evenly to ensure they cook thoroughly without sticking.
Cover the slow cooker and set it on low. Let the soup simmer for about 4 to 6 hours until the meatballs are cooked through and flavors meld, filling your kitchen with warm, savory aromas.
Once cooking time is complete, open the lid and stir in the chopped kale. The residual heat will wilt the greens within a few minutes, adding fresh color and nutrients.
Taste the broth and adjust the seasoning with salt and pepper as needed, making sure the flavors are balanced and hearty.
Scoop the warm, inviting soup into bowls, ensuring each serving includes a few tender meatballs along with the vibrant vegetables and herbs. Serve hot and enjoy the comforting, seasonal flavors.