Keto creamy mushroom chicken
September 19, 2026 · 3 min read
The sauce is the reason to make this. Mushrooms browned in butter until they give up their water, then deglazed and simmered with cream and Parmesan, build a pan sauce with real depth, and the seared chicken finishes right in it so nothing washes down the drain. Spinach wilts in at the end for color and a little more vegetable. It reads like a restaurant plate and cooks in one skillet.
Thighs stay juicy through the simmer, but the recipe works with breasts too if that's the preference.
Ingredients
- 4 boneless skinless chicken thighs (about 1 1/2 lb)
- Salt, to taste
- Black pepper, to taste
- 1 tablespoon olive oil
- 2 tablespoons butter
- 8 oz cremini mushrooms, sliced
- 3 cloves garlic, minced
- 1 teaspoon dried thyme
- 1/2 cup chicken broth
- 3/4 cup heavy cream
- 1/2 cup grated Parmesan
- 2 cups baby spinach
- 2 tablespoons chopped parsley, to serve
Steps
- Season the chicken with salt and pepper. Heat the olive oil in a large skillet over medium-high and sear the thighs until golden, 4 to 5 minutes a side, then move them to a plate.
- Melt the butter in the pan. Add the mushrooms and leave them undisturbed a couple of minutes, then toss until browned and their liquid has cooked off, 5 to 6 minutes. Stir in the garlic and thyme for 30 seconds.
- Pour in the broth and scrape up the browned bits, then stir in the cream and bring to a gentle simmer.
- Whisk in the Parmesan until the sauce thickens, then stir in the spinach until wilted.
- Return the chicken and its juices, spoon the sauce over, and simmer until cooked through (165°F), about 5 minutes. Finish with parsley.
How it comes together
Makes 4 servings — read left to right; each column combines what's behind it.
PrepSlice the mushrooms and mince the garlic before you start — the sauce comes together quickly once the chicken is out of the pan.
| 4 chicken thighsesboneless, skinless | Sear the chicken | ||||
| saltto taste | |||||
| black pepperto taste | |||||
| 1 tbsp · 14 g olive oil | |||||
| 2 tbsp · 28 g butter | Brown the mushrooms | ||||
| 8 oz · 225 g cremini mushroomssliced | |||||
| 3 cloveses · 9 g garlicminced | |||||
| 1 tsp dried thyme | |||||
| ½ cup · 120 g chicken broth | Build the sauce | ||||
| ¾ cup · 180 g heavy cream | |||||
| ½ cup · 50 g grated Parmesan | Finish the sauce | ||||
| 2 cups · 60 g baby spinach | |||||
| 2 tbsp parsleychopped, to serve | Simmer and serve |
Scaling adjusts quantities only — cooking times and pan sizes may need judgment. Grams are rounded for the kitchen.
Swaps
Boneless breasts stand in for the thighs; slice thick ones in half horizontally so they cook through before the sauce reduces too far. Any mushroom works — cremini, button, or a handful of torn wild mushrooms for more flavor. Swap the spinach for kale (add it a minute earlier so it softens) or leave the greens out entirely. Half-and-half can replace the heavy cream, though the sauce won't thicken as much, so let it reduce a little longer or add an extra tablespoon of Parmesan.
Notes
Brown the mushrooms properly. Crowding the pan or stirring too soon makes them steam and go rubbery, so give them space and let them sit until they've taken on color before tossing. If the sauce tightens up too much before serving, loosen it with a splash of broth or cream off the heat. A squeeze of lemon at the end cuts the richness if the plate feels heavy.
The macros here are an estimate. Not sure a second helping of sauce still fits under your limit? Copper Keto Companion keeps your running total, so you'll know before you spoon it on.
FAQ
Are mushrooms keto-friendly? Yes. Cremini mushrooms run about 2g net carbs per 100g, so a full half-pound in the sauce adds only a few grams across four servings.
Can I make the sauce ahead? The sauce is best fresh, since cream sauces can break when reheated hard. If you do make it ahead, warm it gently over low heat and whisk in a little extra cream to bring it back together.
Why did my cream sauce break? Too much heat. Boiling a cream-and-cheese sauce can cause it to separate; keep it at a gentle simmer and add the Parmesan off a hard boil.
What can I serve it over? Cauliflower rice, zucchini noodles, or mashed cauliflower all soak up the sauce without adding carbs. On its own with the spinach, it's already a full plate.
How is this different from Tuscan chicken? This one leans on mushrooms rather than sun-dried tomatoes, so it's a milder, earthier cousin of creamy Tuscan chicken — a good rotation if you also make pan-seared chicken thighs on repeat.