Save to feedthepins This satisfying bake combines seared chicken breasts with a rich, creamy sauce featuring sautéed mushrooms and wilted spinach. The dish comes together in just 55 minutes, making it perfect for busy weeknights when you want something comforting without the heavy carbs.
The creamy sauce gets its luxurious texture from heavy cream and cream cheese, while Parmesan and mozzarella add savory depth. A hint of nutmeg and dried Italian herbs elevate the flavors without overwhelming the fresh ingredients.
Each serving delivers 46 grams of protein with only 7 grams of carbohydrates, making it an excellent option for those following low-carb or gluten-free eating patterns. The dish reheats beautifully and can be assembled ahead for even quicker weeknight meals.
My sister-in-law brought this to our Sunday family dinner last winter when everyone was doing their low carb New Year thing. I was skeptical another casserole would actually satisfy my pasta loving husband, but he went back for seconds before I even sat down. The way the creamy sauce gets into every corner of the spinach and mushrooms somehow makes you forget you are eating something healthy. Now it is the first recipe I pull out when I need something comforting but not heavy.
Last Tuesday I had zero energy to cook but chicken was thawing on the counter and friends were coming over. I threw this together in about twenty minutes, which is exactly how long it took to throw together a quick salad. One of my friends actually asked what restaurant I ordered it from because the sauce tasted like something professional. The best part was walking into the kitchen forty minutes later and realizing dinner was done and I had not even thought about it since popping it in the oven.
Ingredients
- Boneless skinless chicken breasts: I pound them slightly to even thickness so they cook at the same rate and stay juicy
- Olive oil: Just enough to get a good sear going, those golden bits become flavor base for the sauce
- Fresh spinach: Frozen would work but fresh wilts so beautifully and holds onto the cream sauce better
- Cremini mushrooms: Their earthy flavor stands up to the rich sauce better than plain white mushrooms
- Heavy cream: Do not be tempted to use milk, you need that fat content for the sauce to thicken properly
- Cream cheese: Make sure it is softened to room temperature so it melts smoothly into the sauce
- Grated Parmesan: The salty punch balances the mild cream cheese and adds depth
- Shredded mozzarella: Save half for the top because that golden bubbly crust is basically the whole point
- Dried Italian herbs: Whatever blend you have works, just something with oregano and basil
- Ground nutmeg: Trust me on this one, just a tiny pinch makes the cream sauce taste restaurant quality
Instructions
- Get the oven ready:
- Preheat to 200°C (400°F) and grease a 23 x 33 cm (9 x 13-inch) baking dish with butter or cooking spray. Do this first so the dish is ready when your sauce comes together.
- Sear the chicken:
- Season both sides of the chicken with salt and pepper. Heat olive oil in a large skillet over medium-high heat and cook chicken for 3-4 minutes per side until golden brown. Transfer to a plate and do not worry about finishing it through yet.
- Cook the vegetables:
- Add onion and mushrooms to the same skillet and sauté 4-5 minutes until softened and moisture has evaporated. Stir in garlic for 1 minute then add spinach and cook just until wilted, about 1-2 minutes.
- Make the creamy sauce:
- Reduce heat to low and stir in cream cheese and heavy cream until completely smooth. Mix in Parmesan, half the mozzarella, Italian herbs, and nutmeg. Taste and add more salt and pepper if needed then remove from heat.
- Assemble the bake:
- Spread the spinach and mushroom mixture evenly in the prepared baking dish. Nestle the seared chicken on top and spoon a little sauce over each piece. Sprinkle remaining mozzarella across the top.
- Bake until bubbly:
- Bake uncovered for 20-25 minutes until chicken reaches 74°C (165°F) and cheese is golden and bubbling. Let rest 5 minutes before serving so the sauce sets slightly.
Save to feedthepins This became my go-to when my dad was recovering from surgery last spring because it freezes beautifully and reheats without losing any texture. My mom said it was the first thing he actually wanted seconds of during his whole recovery. There is something about that combination of hot bubbly cheese and tender chicken that just says everything will be okay.
Make It Your Own
Sometimes I swap in turkey breast or even thin pork chops when chicken feels boring. A pinch of red pepper flakes in the sauce adds lovely warmth without actual heat. Provolone instead of mozzarella gives it a sharper more grown-up flavor that my husband prefers on date nights.
Planning Ahead
The entire dish can be assembled up to 24 hours before baking, just cover tightly and refrigerate. Add an extra 5-10 minutes to the baking time if it goes in cold. I actually think the flavors meld even better when it sits overnight, so this is perfect for dinner parties or meal prep Sundays.
Serving Suggestions
A crisp green salad with acidic vinaigrette cuts through the richness beautifully. Roasted cauliflower or broccoli would work perfectly if you want another low carb vegetable. Keep it simple though because this casserole is practically a meal in itself.
- Steamed asparagus with lemon makes the plate feel restaurant special
- A light arugula salad with shaved Parmesan keeps things elegant
- Just crusty bread for the non-low-carb people at your table
Save to feedthepins This recipe has saved me so many weeknights when I wanted something comforting but did not want to spend hours in the kitchen. The leftovers might be even better than the first night, if they last that long in my house.
Recipe Q&A
- → Can I make this ahead of time?
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Yes, you can assemble the entire dish up to 24 hours before baking. Cover tightly and refrigerate, then bake when ready. You may need to add 5-10 minutes to the baking time if baking cold from the refrigerator.
- → What vegetables can I substitute for the spinach?
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Kale, Swiss chard, or chopped broccoli work well as alternatives. Adjust cooking time slightly as kale may need a few extra minutes to tenderize. Frozen spinach can also be used if thoroughly thawed and drained.
- → Can I use chicken thighs instead of breasts?
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Absolutely. Boneless skinless chicken thighs work beautifully and may stay more moist during baking. Adjust cooking time to 25-30 minutes, or until thighs reach an internal temperature of 74°C (165°F).
- → How do I store leftovers?
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Store cooled leftovers in an airtight container in the refrigerator for 3-4 days. Reheat gently in the microwave at 50% power or in a 160°C (325°F) oven until warmed through. The sauce may separate slightly when reheated but will come together when stirred.
- → Can I freeze this dish?
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Yes, freeze before baking for best results. Wrap the assembled dish tightly in plastic wrap and foil, then freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed.
- → What sides pair well with this bake?
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A crisp green salad with vinaigrette balances the rich sauce. Roasted low-carb vegetables like cauliflower, broccoli, or Brussels sprouts also complement perfectly. For a heartier meal, serve over cauliflower rice or zucchini noodles.
