Ground Turkey Mushroom Soup with Spinach
A savory, nutrient-dense broth-based soup built on ground turkey browned with aromatics and combined with earthy mushrooms, tender spinach, and cauliflower rice. The dual-stock base (vegetable and mushroom) creates deep umami flavors. Herbaceous notes from thyme and poultry seasoning balance the earthiness. Serve hot as a weeknight dinner or meal-prep lunch; the citrus finish lifts the palate. This version prioritizes whole ingredients and fresh spinach over processed broths, making it naturally lower-sodium and adaptable to pantry staples.
Ingredients
- 1 cup frozen cauliflower rice, thawed
- 4 tsp olive oil, divided
- 1 lb lean ground turkey
- salt, to taste
- fresh ground black pepper, to taste
- 1 small onion, diced
- ½ cup celery, chopped
- 1 T garlic, minced
- 2 tsp dried thyme
- 1 tsp poultry seasoning
- 2 tsp Spike Seasoning
- 4 cups vegetable stock
- 4 cups mushroom stockwater + 1T soy sauce per cup1:1umamiadds glutenadds soy
adds saltiness; reduce added salt
- 8 oz brown Cremini mushrooms, cut in thick slices and halved
- 3 cups spinach, chopped, fresh or packed
- 2 T fresh lemon juice, squeezed
- Parmesan cheese, grated, for serving(optional)
Instructions
- 1
Thaw 1 cup frozen cauliflower rice on the counter.
- 2
Heat 2 tsp olive oil in a non-stick pan over medium-high heat. Brown ground turkey, breaking apart with a turner as it cooks. Season with salt and pepper. Transfer to a large soup pot.
- 3
Add remaining 2 tsp olive oil to the pan. Saute diced onion for 4 minutes until softened.
- 4
Add minced garlic, dried thyme, poultry seasoning, and Spike Seasoning. Cook for 2 minutes until fragrant.
- 5
Transfer onion mixture to the soup pot. Add vegetable stock and mushroom stock.
- 6
Bring to a boil, then reduce heat to a low simmer.
- 7
Cut mushrooms into thick slices, then halve each slice. Add to the pot.
- 8
Simmer for at least 20 minutes until mushrooms are tender.
- 9
Add thawed cauliflower rice. Simmer for 10 minutes.
- 10
Coarsely chop spinach. Add to the pot and simmer for 10-15 minutes until tender.
- 11
Stir in fresh lemon juice. Cook for a few minutes more.
- 12
Serve hot, topped with grated Parmesan if desired.
Tips
Use a mushroom base cube or Better Than Bouillon mushroom base if fresh mushroom stock is unavailable; it concentrates umami without requiring long simmering.
Squeeze lemon juice fresh just before serving to preserve brightness; bottled juice lacks the aromatic volatility that enhances the broth's savory depth.
For meal prep, store soup and Parmesan separately; add cheese only at reheating to prevent sogginess and maintain texture contrast.
Good to Know
Refrigerate in an airtight container for up to 4 days. Freeze in portion-sized containers for up to 3 months; thaw overnight in the refrigerator before reheating. Spinach and cauliflower may soften slightly upon reheating; this does not affect flavor.
Prepare the soup through the mushroom simmering step (before cauliflower rice) up to 1 day ahead. Cool and refrigerate. Reheat to a simmer, then proceed with cauliflower rice and spinach additions. Alternatively, prep all ingredients (measure spices, chop vegetables, portion cauliflower rice) in advance.
Ladle into bowls. Pass grated Parmesan and a wedge of lemon at the table. Pairs well with crusty bread or a simple green salad. Suitable for meal prep: portion into containers and reheat in the microwave or on the stovetop.
Common Mistakes
Do not add spinach at the start; it will break down into mush. Add it near the end so it retains texture and color.
Do not use pre-grated Parmesan; the anti-caking agents prevent melting. Grate fresh cheese to avoid a gritty texture.
Do not skip the lemon juice or assume it's optional; it brightens the broth and prevents the soup from tasting flat and one-dimensional.
Substitutions
Dairy-Free Swaps
General Alternatives
adds saltiness; reduce added salt
FAQ
Can I use store-bought chicken broth instead of vegetable and mushroom stock?
Yes. Replace the vegetable and mushroom stock with 8 cups chicken broth. The soup will be lighter and less earthy, but still flavorful. If using broth with added salt, reduce the amount of Spike Seasoning by half.
What if I don't have Spike Seasoning?
Spike is a proprietary blend of salt, garlic, and herbs. Omit it and season to taste at the end with additional salt, garlic powder, or a blend of dried Italian herbs. The soup will still be delicious; you are just adjusting the seasoning profile to your preference.
How long can I keep this soup, and can I freeze it?
Store refrigerated for up to 4 days. Freeze for up to 3 months in airtight containers or freezer bags. Thaw overnight in the refrigerator before reheating. Spinach and cauliflower soften slightly upon freezing and reheating but remain palatable.