Garlic Butter Mushrooms & Onions
If you’re looking for a quick and delicious side dish that brings comfort to any meal, you’ve come to the right place! This Garlic Butter Mushrooms & Onions recipe is one of my go-to favorites. It’s simple yet packed with flavor, making it perfect for busy weeknights or family gatherings. The rich garlic butter sauce clings to the mushrooms and onions beautifully, creating a dish that’s hard to resist.
What I love about this recipe is how versatile it is. Whether you’re serving it alongside grilled chicken or just tossing it over some pasta, these garlic butter mushrooms & onions will elevate your dinner table. Let’s dive into why this dish has become a staple in my kitchen!
Why You’ll Love This Recipe
- Quick and Easy: With just 10 minutes of prep and 15 minutes of cooking time, you can whip this up in under half an hour!
- Family-Friendly: Kids and adults alike will love the savory flavors of garlic and buttery goodness.
- Versatile: Perfect as a side dish or tossed with your favorite grains for a hearty main course.
- Make Ahead: You can prepare these mushrooms in advance and reheat them when you’re ready to eat.
- Healthy Ingredients: Full of wholesome ingredients that are both nutritious and satisfying.

Ingredients You’ll Need
These are simple, wholesome ingredients that you might already have in your pantry. With just a few items, you can create a delicious side dish that will impress everyone at the table.
Fresh Ingredients
- 16 ounces small button mushrooms
- 2 Tablespoons olive oil
- 4 cloves garlic (chopped or crushed)
- 1 medium onion (minced)
Flavor Boosters
- 1/2 cup chicken stock or white grape juice
- Zest from 1 medium lemon
- 1 tablespoon lemon juice
- 1/2 teaspoon chili flakes (or to taste)
Finishing Touches
- 4 tablespoons butter (divided)
- 2 tablespoons chopped parsley
- Kosher salt or sea salt (to taste)
- Fresh cracked black pepper (to taste)
Variations
This recipe is wonderfully flexible! Here are some fun variations to keep things exciting:
- Swap the mushrooms: Feel free to use portobello or shiitake mushrooms for different textures and flavors.
- Add some greens: Toss in some spinach or kale toward the end for an extra nutritional boost.
- Go spicy: If you love heat, add more chili flakes or even some diced jalapeños!
- Make it creamy: Stir in a splash of cream or coconut milk at the end for a richer sauce.
How to Make Garlic Butter Mushrooms & Onions
Step 1: Prepare the Mushrooms
Start by brushing the mushrooms clean. If their stems look dried out, trim the bottoms. You can keep them whole for a beautiful presentation, or slice them in half if they’re on the larger side. This step ensures they cook evenly and soak up all that delicious garlic butter goodness.
Step 2: Sauté the Mushrooms
Heat a large skillet over medium-high heat and add olive oil. Once hot, toss in your mushrooms. Cook them for about 3-5 minutes until they start to brown and caramelize. This browning adds depth of flavor, making your dish even more delightful.
Step 3: Add Garlic and Onions
Next, add 2 tablespoons of butter into the skillet. Let it melt slightly before adding minced onions and garlic. Sauté everything together until the onions become lightly caramelized and softened—about another 3-5 minutes. This step develops a wonderful aroma that fills your kitchen!
Step 4: Build Flavor with Stock and Lemon
Pour in your choice of chicken stock or white grape juice along with lemon zest, lemon juice, and chili flakes. Allow this mixture to cook for about 2 minutes until the liquid reduces slightly. This reduction intensifies all those lovely flavors!
Step 5: Finish with Butter and Parsley
Finally, stir in the remaining 2 tablespoons of butter along with chopped parsley. Cook for an additional minute until everything is well combined and warm. Don’t forget to season with salt and pepper to taste before serving warm—a final touch that makes all the difference!
Now you’re ready to enjoy these Garlic Butter Mushrooms & Onions as a delightful addition to any meal!
Pro Tips for Making Garlic Butter Mushrooms & Onions
Cooking can be a delightful adventure, and with these pro tips, you’ll elevate your Garlic Butter Mushrooms & Onions to new heights!
- Choose Fresh Mushrooms: Opt for plump, firm mushrooms for the best texture and flavor. Fresh mushrooms will absorb the garlic and butter beautifully, ensuring a delicious outcome.
- Don’t Overcrowd the Pan: Give mushrooms space in the skillet. Overcrowding can lead to steaming instead of caramelizing, which means you miss out on those lovely golden edges that add depth to the dish.
- Adjust the Heat Carefully: Start with medium-high heat to get that perfect browning on the mushrooms. If you notice them cooking too quickly or burning, reduce the heat slightly to allow even cooking without compromising flavor.
- Experiment with Herbs: While parsley is delightful, feel free to experiment by adding herbs like thyme or rosemary. These can introduce new flavors that complement the garlic and butter perfectly.
- Make it Ahead: This dish reheats wonderfully! You can prepare it in advance and store it in the fridge. Just reheat gently on the stove, adding a splash of stock if needed to bring back moisture.
How to Serve Garlic Butter Mushrooms & Onions
Serving Garlic Butter Mushrooms & Onions is all about enhancing its rich flavor while showcasing its beautiful appearance. Here are some delightful serving suggestions:
Garnishes
- Chopped Green Onions: A sprinkle of fresh green onions adds a pop of color and a mild onion flavor that complements the dish beautifully.
- Microgreens: For an elegant touch, top your mushrooms with fresh microgreens. They lend a lovely crunch and freshness.
- Grated Parmesan Cheese (or Vegan Alternative): A light dusting of grated cheese adds richness and depth while balancing out the savory notes of garlic and butter.
Side Dishes
- Quinoa Salad: This light salad loaded with veggies makes for a refreshing pairing. The nutty quinoa contrasts nicely with the rich mushrooms.
- Garlic Mashed Potatoes: Creamy mashed potatoes infused with garlic will create a comforting plate alongside your mushrooms.
- Steamed Asparagus: Bright green asparagus drizzled with lemon juice offers a crisp texture that pairs well with the buttery mushrooms.
- Wild Rice Pilaf: Earthy wild rice mixed with nuts and dried fruits brings another layer of flavor, making your dinner more exciting and well-rounded.
Now you’re all set to impress your family or guests with this simple yet elegant side dish! Enjoy every bite!

Make Ahead and Storage
This Garlic Butter Mushrooms & Onions recipe is perfect for meal prep! You can whip up a large batch and enjoy its deliciousness throughout the week. Here’s how to store, freeze, and reheat your tasty dish:
Storing Leftovers
- Allow the mushrooms and onions to cool completely.
- Transfer to an airtight container.
- Store in the refrigerator for up to 3 days.
Freezing
- Let the dish cool before freezing.
- Place in a freezer-safe container or zip-top bag, removing as much air as possible.
- Freeze for up to 2 months.
Reheating
- Thaw overnight in the refrigerator if frozen.
- Reheat gently in a skillet over low heat until warmed through, about 5-7 minutes.
- Stir occasionally to ensure even heating.
FAQs
Here are some common questions you might have about making Garlic Butter Mushrooms & Onions.
Can I use other types of mushrooms for Garlic Butter Mushrooms & Onions?
Absolutely! Feel free to use your favorite mushroom varieties like cremini, shiitake, or portobello. Just adjust the cooking time as needed based on their size.
How do I make Garlic Butter Mushrooms & Onions vegetarian?
You can easily make this dish vegetarian by substituting chicken stock with vegetable broth or using white grape juice, as mentioned in the recipe. It will still be rich and flavorful!
What can I serve with Garlic Butter Mushrooms & Onions?
These garlic butter mushrooms make a delightful side for grilled vegetables, pasta dishes, or even a hearty grain bowl. They add a lovely touch to any meal!
Final Thoughts
I hope you find joy in preparing this Garlic Butter Mushrooms & Onions recipe! It’s not only simple but also bursting with flavor that pairs beautifully with various dishes. Enjoy making it, and don’t hesitate to share your experiences or tweaks—I’d love to hear from you! Happy cooking!
PrintGarlic Butter Mushrooms & Onions
A quick, savory side dish featuring tender mushrooms and caramelized onions sautéed in rich garlic butter. Perfect for steaks, chicken, pasta, or as a comforting vegetarian bite.
- Prep Time: 10 minutes
- Cook Time: 12 minutes
- Total Time: 22 minutes
- Yield: 4 servings 1x
Ingredients
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2 tbsp butter
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1 tbsp olive oil
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3 cups sliced mushrooms
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1 medium onion, sliced
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3–4 garlic cloves, minced
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Salt & black pepper
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Fresh parsley (optional)
Instructions
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Heat butter and olive oil in a skillet over medium heat.
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Add onions and cook until soft and lightly golden.
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Stir in mushrooms and sauté until browned and tender.
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Add garlic, salt, and pepper; cook 1–2 minutes until fragrant.
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Garnish with parsley and serve warm.
Notes
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Avoid overcrowding the pan to help the mushrooms brown.
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Add a splash of soy sauce or balsamic vinegar for extra depth.
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Great served over steak, mashed potatoes, or toast.
Nutrition
- Calories: ~110
- Sugar: ~3g
- Fat: ~8g
- Carbohydrates: ~7g
- Fiber: ~1g
- Protein: ~3g
