This dish is all about fresh veggies! Sautéed zucchini, mushrooms, and onions come together to create a colorful and tasty mix that will brighten up any meal.
You can enjoy this simple side dish with dinner, or even toss it on a salad! I love that it’s quick to make and always a hit at the table. Plus, those mushrooms are just so fun to eat! 😊
Key Ingredients & Substitutions
Zucchini: Fresh, medium-sized zucchinis are best for this dish. If you can’t find them, yellow squash is a good substitute, as they have a similar flavor and texture.
Mushrooms: Button or cremini mushrooms add a nice earthy taste. If you’re looking for something different, try shiitake or portobello mushrooms for a deeper flavor.
Onion: Yellow onions add sweetness. You could swap in red onions for a sharper taste or sweet onions like Vidalia for added sweetness.
Olive oil or butter: I usually go for olive oil for its health benefits, but butter can give a rich flavor. Coconut oil is a non-dairy option if you’re lactose intolerant.
Garlic: While optional, garlic elevates the dish’s flavor. If you’re avoiding garlic, just omit it or use garlic-infused oil for a hint of its flavor.
How Do I Get Perfectly Tender Zucchini and Mushrooms?
The key to achieving tender zucchini and perfectly browned mushrooms is all about timing and heat control. Here’s how to do it:
- Start by sautéing the onions until they’re soft before adding the mushrooms. This allows them to soften first and builds a flavor base.
- When you add the mushrooms, let them cook without stirring too much at first. This helps them brown nicely as they release their moisture.
- Finally, add the zucchini towards the end. They cook quickly, so a few minutes is all you need until they’re just tender but not mushy.
- Adjust the heat as needed; medium heat works best to avoid burning while giving the veggies a nice golden color.
With these tips in mind, you’ll have a delicious and colorful sauté that complements any meal. Enjoy your cooking!

How to Make Sauteed Zucchini, Mushrooms, and Onions
Ingredients You’ll Need:
Vegetables:
- 2 medium zucchinis, sliced into 1/4-inch thick rounds or half-moons
- 8 oz mushrooms, sliced (button or cremini work well)
- 1 medium yellow onion, sliced into thin half-rings
Cooking Essentials:
- 2 tbsp olive oil or butter
- 2 cloves garlic, minced (optional)
- Salt, to taste
- Black pepper, freshly ground, to taste
- 1/4 tsp crushed red pepper flakes (optional, for a little heat)
- 1 tbsp fresh parsley or chives, chopped (for garnish)
How Much Time Will You Need?
This delicious sauté will take you about 15-20 minutes to prepare and cook. You’ll spend a few minutes slicing the veggies, then just sauté them quickly in the skillet for a fantastic side dish!
Step-by-Step Instructions:
1. Heat the Skillet:
Start by heating the olive oil or butter in a large skillet over medium heat. Allow it to warm up, so it’s ready for your vegetables!
2. Sauté the Onions:
Add the sliced onions to the skillet. Sauté them for about 3-4 minutes until they begin to soften and turn translucent. This creates a sweet base for your dish.
3. Add the Mushrooms:
Next, throw in the sliced mushrooms with the onions. Cook for another 5-6 minutes, stirring occasionally, until the mushrooms release their moisture and start to brown. Keep an eye on them to ensure they don’t burn!
4. Include the Garlic:
If you’re using garlic, now’s the time to add it! Stir it in and cook for about 30 seconds until fragrant, making sure not to let it burn.
5. Mix in the Zucchini:
Now, add the sliced zucchini to your skillet. Season everything with salt, black pepper, and the crushed red pepper flakes if you like a bit of spice.
6. Finish Sautéing:
Continue to sauté the mixture for another 5-7 minutes, stirring gently, until the zucchini is tender but still slightly crisp. This is where all the flavors come together beautifully!
7. Taste and Serve:
Give your sauté a taste and adjust the seasoning as needed. Once you’re happy with the flavor, remove it from heat and sprinkle with chopped fresh parsley or chives for a touch of color and freshness!
8. Enjoy:
Serve warm as a delightful side dish or even on top of grains or salads. This simple sauté perfectly balances the tender zucchini with earthy mushrooms and sweet onions. Enjoy your delicious and easy creation! 😊
Can I Use Frozen Vegetables for This Recipe?
While fresh vegetables yield the best flavor and texture, you can use frozen zucchini, mushrooms, and onions if necessary. Just make sure to thaw them completely and drain any excess moisture before sautéing to avoid a watery dish.
Can I Add Other Vegetables to This Sauté?
Absolutely! Feel free to get creative. Bell peppers, spinach, or even carrots can be delicious additions. Just adjust the cooking time based on the vegetables you choose, adding those that take longer to cook first.
How to Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3 days. To reheat, warm gently in a skillet or microwave, adding a splash of olive oil if necessary to retain moisture.
What’s the Best Way to Serve This Dish?
This sauté works well as a side dish, but you can also serve it over grains like quinoa or rice, or toss it into a salad for added flavor and texture. Adding a sprinkle of cheese on top can also enhance its taste!



