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Slow Cooker Turkey Sausage and Potato Soup

Slow Cooker Turkey Sausage and Potato Soup

Slow Cooker Turkey Sausage and Potato Soup is a creamy, savory bowl featuring tender turkey meatballs, soft russet potatoes, and bright baby spinach. This easy weeknight dinner simmers low and slow to develop herbs and cozy depth, making it perfect for winter evenings. It yields generous portions and is a warm, approachable reason to gather and enjoy a comforting soup.
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Prep Time 10 minutes
Cook Time 7 hours
Total Time 7 hours 10 minutes
Course Soups
Cuisine American
Servings 8 people
Calories 350 kcal

Equipment

  • Slow Cooker
  • Small skillet
  • Mixing Bowl

Ingredients
  

  • 1 pound lean ground turkey we like a combination of white & dark, about 93% lean... feel free to use extra lean turkey breasts Brown thoroughly and season the meat to create a lean, savory base for the soup; mix white and dark turkey for balanced texture and flavor while keeping fat content low. Use extra-lean turkey breasts as an alternative to reduce greasiness and maintain a tender mouthfeel after slow cooking. Crumble as you brown so it integrates evenly with vegetables and spices, providing protein and body to the broth.
  • 1 teaspoon garlic powder Add pungent garlic flavor and gentle sweetness without introducing fresh garlic moisture; sprinkle early to allow heat to bloom the dried garlic's aromatics. Use to season the turkey and vegetables evenly, helping form a cohesive savory profile throughout the soup.
  • 1/2 teaspoon black pepper Apply a subtle heat and aromatic depth that complements other spices while leaving room for adjustments; grind-fresh black pepper brightens flavors when added during browning. Use the listed amount to season the meat and vegetables, then taste near the end and add a pinch if needed.
  • 1 teaspoon sage ground Introduce warm, earthy, and slightly floral notes reminiscent of classic poultry seasoning; ground sage supports the turkey's flavor and imparts a comforting aroma. Add during cooking so the oil and broth release the herb's savory, slightly peppery character throughout the soup.
  • 1 teaspoon onion powder Contribute mellow, rounded onion undertones without the texture of fresh onion; sprinkle into the meat or broth early so it hydrates and melds with other spices. Use to enhance savory depth while allowing fresh diced onion to provide textural contrast.
  • 1 teaspoon red pepper flakes more or less to taste Provide a concentrated spicy kick and visual flecks that lift the overall flavor; adjust quantity to suit heat preference for the family. Add gradually and taste, because red pepper flakes can dominate if overused, but they add a lively counterpoint to creamy potatoes and milk.
  • 1 teaspoon dried oregano Deliver Mediterranean herbal notes with a slightly bitter, peppery edge that rounds out the seasoning blend; dried oregano pairs well with tomatoes and savory broths. Sprinkle in with other dried herbs so its oils infuse into the broth during slow cooking.
  • 1/2 teaspoon cayenne pepper more or less to taste Supply sharp, concentrated heat to accentuate spice layers and emphasize savory components; cayenne should be used cautiously and balanced against dairy in the soup. Add early for even heat distribution, then re-evaluate seasoning after milk is added.
  • 1 tablespoon extra virgin olive oil Sauté aromatics and brown the turkey in a small amount of fat to develop fond and richer flavor; extra virgin olive oil adds fruity, peppery undertones while preventing sticking. Use moderate heat to avoid burning the oil and to coax flavors from onion, celery, and garlic.
  • 1 yellow onion small, diced Provide a sweet, aromatic foundation and soft texture when diced and sautéed; small yellow onion mellows and caramelizes, contributing natural sweetness to the soup. Add early to release sugars and deepen overall savory complexity as it simmers with the meat.
  • 1 celery stalk diced Add crisp, mild vegetal flavor and subtle aromatic support when diced; celery contributes body and a classic soup base reminiscent of mirepoix. Sauté with onion to soften fibers and release its slightly bitter, green notes that balance richness.
  • 1 garlic clove minced Deliver a sharp, aromatic burst and savory depth when minced; fresh garlic offers brighter, fresher flavor than garlic powder and should be added while sautéing. Cook briefly to avoid bitterness and to blend its pungency into the background of the broth.
  • 2 russet potatoes medium, cut into 1-inch cubes Provide tender, starchy body and creamy texture as they soften; 1-inch cubed russets break down slightly during cooking to thicken the broth naturally. Keep cubes uniform for even cooking so potatoes maintain some bite while also releasing starch to enrich the soup.
  • 1/2 teaspoon black pepper Reinforce seasoning and balance savory components with an additional layer of ground black pepper for finishing; this second addition allows fine-tuning after other ingredients are combined. Use sparingly and taste before adding more, since pepper flavor concentrates as the soup reduces.
  • sea or kosher salt to taste Season to taste to achieve the desired saltiness and to awaken other flavors; sea or kosher salt enhances the savory profile and helps extract moisture and sweetness from vegetables. Add gradually, tasting as the soup simmers because broth and other components may already contribute sodium.
  • 1/4 teaspoon cayenne pepper Add a subtle additional kick to brighten the flavor profile and support the soup's spice layers; a small pinch of cayenne near the end lets you control final heat level. Use cautiously to avoid overpowering the creamy elements and to maintain balance with the earlier cayenne.
  • 4 cups chicken broth fat free, low sodium Provide savory liquid and a flavorful backbone to cook ingredients and blend seasonings; low-fat, low-sodium chicken broth supplies chicken-forward depth without excess fat. Use the listed amount to ensure enough liquid for slow cooking while allowing for concentration of flavors.
  • 2 cups milk 2% milk was used (use milk that has some fat) Contribute creaminess and body while tempering spiciness; 2% milk adds a mild dairy richness that melds with potato starch to create a smooth mouthfeel. Add toward the end of cooking to prevent curdling and to achieve a gently rich, comforting broth.
  • 1 cup baby spinach rinsed and chopped Introduce fresh green brightness and a tender leafy texture when rinsed and chopped; baby spinach wilts quickly into the hot soup and adds color, vitamins, and mild vegetal flavor. Stir in near the end of cooking to preserve its nutrients and avoid overcooking delicate leaves.

Instructions
 

  • Combine the sausage ingredients in a medium bowl, make into 1 1/2" size meatballs, cover and keep refrigerated while preparing the other soup ingredients.: As you mix the seasonings into the ground turkey , you will feel the mixture become cohesive, slightly tacky, and easy to shape. The meatballs should be uniform so they cook evenly; I like using a cookie scoop to portion them. Refrigerating helps them firm up, which reduces falling apart when they hit the liquid. If you skip chilling, the meatballs can become loose and break apart, making the soup cloudy and changing texture.
  • In a small skillet, add extra virgin olive oil, turn to medium-low heat and sauté diced onion and celery for approximately 5 minutes, or until tender. Add to the slow cooker: sautéed onions and celery, along with garlic, potatoes, herbs, spices and chicken broth; stir all the ingredients to combine.: The extra virgin olive oil will shimmer gently and release a savory scent as the diced onion and celery soften. You want translucence and a touch of golden color, not browning, which brings sweeter notes. Sautéing concentrates flavor and eliminates raw edge. A common mistake is cooking too hot, which leads to bitter char and a less balanced soup, so keep the heat moderate.
  • Add turkey sausage meatballs to the soup mixture. Cook on low 6-7 hours or until meatballs are done. Just before turning off the slow cooker, add milk and spinach and allow to cook just until spinach is wilted and soup heated through, about 5-10 minutes.: sautéed onions and celery, along with garlic, potatoes, herbs, spices and chicken broth; stir all the ingredients to combine : When you transfer the sautéed vegetables into the slow cooker and add the diced russet potatoes , minced garlic , dried herbs, and chicken broth , the pot should smell herbaceous and rounded. Stirring helps distribute heat pockets and seasonings so nothing cooks unevenly. Visual cues include the broth settling around the potatoes and aromatics releasing a warming steam. Avoid overfilling the cooker, which can extend cooking time and compromise texture.
  • Add turkey sausage meatballs to the soup mixture: Gently nestle the chilled meatballs into the simmering liquid so they are mostly submerged. They will slowly release juices, enriching the broth and infusing it with savory depth. You should see the surface of the meatballs firm and then small pockets of juice appear as they cook. Resist the urge to stir aggressively early on, which can break them apart; instead, tuck them in and let the gentle movement of the liquid do the work.
  • Cook on low 6 to 7 hours or until meatballs are done: Over the long, low simmer the flavors harmonize and the potatoes soften into a creamy texture while the meatballs cook through to tender perfection. You will notice a steady, savory steam and the broth deepening in color. The meatballs should reach an internal doneness where they are firm yet moist. A common issue is cooking on high which can dry the turkey and make potatoes fall apart, so low and slow is preferred for tenderness and cohesive texture.
  • Just before turning off the slow cooker, add milk and spinach and allow to cook just until spinach is wilted and soup heated through, about 5 to 10 minutes: At the finish, adding the cold milk and chopped baby spinach will create a bright contrast. The milk brings creaminess and softens the broth, while the spinach wilts quickly, keeping its color and a slight bite. To avoid curdling, temper the milk by stirring a small amount of hot broth into it first if you are worried about temperature shock. Overcooking after adding milk can thin the texture or dull the spinach, so keep this final step brief.

Notes

  • Mini meatball swap Make the meatballs slightly smaller for more tender bites throughout the bowl, which also shortens the internal cooking uniformity slightly, making each spoonful studded with flavorful turkey morsels.
  • Broth boost Use a high quality low sodium chicken broth so you control the salt level; this helps when you want to adjust seasoning at the end without oversalting early.
  • Spice control If you prefer less heat, halve the red pepper flakes and cayenne and then add a pinch at the finish, tasting as you go to achieve the warmth you enjoy.
  • Potato texture Cut the russet potatoes into consistent one inch cubes so they hold their shape yet contribute creaminess; if you want thicker body, slightly smash a few cubes while stirring near the end.
  • Milk handling Temper the milk by stirring a small amount of hot broth into it before adding to the cooker, this prevents curdling and ensures a glossy, smooth finish.
Keyword comforting winter soup, easy weeknight soup, slow cooker turkey soup, turkey sausage potato soup