This Sautéed Spinach with Mushrooms and Caramelized Onions is a flavorful, meatless side dish that pairs beautifully with pasta, grilled meats, or seafood. Its rich, creamy texture and savory flavor also make it a great alternative to gravy for holiday meals like Thanksgiving and Christmas.
With tender mushrooms, wilted spinach, sweet caramelized onions, garlic, and Parmesan cheese, this dish is versatile enough to enjoy on its own or as a complement to your favorite main courses. You can even make it lighter by skipping the cream or Parmesan, or omit onions if you’re short on time.
Ingredients (Serves 4)
For the Caramelized Onions:
- 1 tbsp olive oil
- 3 large yellow onions, sliced
- ¼ tsp salt
- 1 tbsp balsamic vinegar
For the Spinach & Mushrooms:
- 1 tbsp olive oil
- 10 oz mushrooms, sliced (button or cremini)
- 6 oz fresh spinach
- 1 cup half-and-half
- 1 cup Parmesan cheese, shredded
- ¼ tsp salt
Substitute for half-and-half: ½ cup heavy cream + ½ cup milk
Instructions
1. Caramelize the Onions
- Heat 1 tbsp olive oil in a large skillet over medium-high heat. Add sliced onions and stir constantly for 10 minutes.
- Reduce heat to medium and cook 10 more minutes, stirring regularly. Sprinkle with ¼ tsp salt.
- Lower heat to medium-low and cook 10 more minutes until deep golden brown.
- Remove from heat and deglaze with 1 tbsp balsamic vinegar, scraping the pan to coat onions evenly. Transfer onions to a plate.
2. Sauté Mushrooms & Spinach
- In the same skillet, heat 1 tbsp olive oil over medium heat. Add mushrooms with a pinch of salt and cook for about 5 minutes until softened.
- Add spinach and stir until just wilted.
3. Make the Creamy Sauce
- Pour in half-and-half and bring to a quick boil, then reduce to a simmer.
- Stir in ⅔ cup Parmesan cheese and ¼ tsp salt until melted and creamy.
- Add the caramelized onions back to the skillet. Adjust thickness by adding more half-and-half if too thick or more cheese if too thin.
Serving Suggestions
- Serve over pasta, ravioli, or tortellini.
- Pair with grilled steak, pork, chicken, or seafood.
- Use as a holiday side instead of traditional gravy.
Tips & Variations
- Lighter Version: Omit cream or Parmesan for a healthier dish.
- Skip Onions: If short on time, sauté mushrooms and spinach alone.
- Extra Flavor: Add garlic, fresh herbs, or a splash of white wine for depth.
This Sautéed Spinach, Mushrooms, and Caramelized Onions recipe is simple, elegant, and bursting with flavor. It’s a versatile side dish that works for weeknight dinners, special occasions, or holiday feasts.