This easy Crockpot Garlic Butter Mushrooms recipe makes tender, savory mushrooms with butter, garlic, broth, and dried herbs in about 10 minutes of preparation. Add everything to the slow cooker, cook on LOW for 3 to 4 hours or HIGH for 1 1/2 to 2 hours, then finish with fresh parsley for a simple side dish that serves about four.
Each bite is rich with mellow garlic-butter flavor, earthy mushroom juices, thyme, oregano, and basil. Serve these slow-cooked mushrooms beside steak or chicken, spoon them over pasta, or pile them onto toasted bread for an effortless appetizer or dinner accompaniment.
Jump to RecipeWhy You’ll Love This Recipe
These Crockpot Garlic Butter Mushrooms turn a short ingredient list into a deeply savory side dish with very little hands-on work. The slow cooker gives the mushrooms time to soften while the butter, broth, garlic, and herbs mingle into a fragrant sauce.
This recipe is especially useful when the main course needs a flavorful companion but the stovetop is already busy. Start the mushrooms before dinner, and they will be ready to serve alongside roasted or grilled proteins without constant stirring.
The flavor is rich but balanced. Butter brings a silky mouthfeel, broth adds savory moisture, garlic provides warmth, and the combination of thyme, oregano, and basil gives the sauce a familiar herb-filled character.
If garlic-butter dinners are a favorite at your table, you may also enjoy these garlic butter shrimp with asparagus for another quick and savory meal idea.
Ingredients You’ll Need
Choose small white, button, or cremini mushrooms that look firm and fresh. Small mushrooms can stay whole, while larger ones should be halved so every piece becomes tender at roughly the same time.
- Mushrooms: One pound, or 16 ounces, provides about four side-dish servings.
- Unsalted butter: Four tablespoons create the rich base and allow you to control the final salt level.
- Low-sodium broth: One-quarter cup supplies moisture and savory flavor without making the dish soupy from the start.
- Garlic and herbs: Four minced garlic cloves, dried thyme, dried oregano, and dried basil form the main seasoning blend.
- Salt and pepper: Kosher salt and freshly ground black pepper sharpen the natural flavor of the mushrooms.
- Fresh parsley: Two tablespoons add a bright, fresh finish just before serving.
Chicken broth works well with poultry or beef, while vegetable broth keeps the side dish suitable for a vegetarian meal. Since mushrooms release plenty of water as they cook, the small amount of broth is enough to help create a sauce without overwhelming their earthy taste.
For another dinner built around the same comforting flavor family, take a look at these garlic butter chicken thighs and mushrooms.
How to Make It Step-by-Step
Step 1: Clean the mushrooms carefully with a damp towel, or rinse them briefly under cool water and dry them thoroughly. Trim the stem ends, leave small mushrooms whole, and halve larger ones so the pieces cook evenly without becoming difficult to eat.
Step 2: Put all of the mushrooms into the slow cooker. Add the butter, low-sodium chicken or vegetable broth, minced garlic, thyme, oregano, basil, kosher salt, and black pepper directly on top; there is no need to melt the butter first.
Step 3: Stir gently to distribute the seasonings and coat the mushrooms as evenly as possible. Some butter may remain in small pieces at this stage, but it will melt as the slow cooker warms.
Step 4: Cover the slow cooker and cook on LOW for 3 to 4 hours or HIGH for 1 1/2 to 2 hours. If convenient, stir once halfway through the cooking time so the mushrooms at the top and bottom spend time in the fragrant butter-broth mixture.
Step 5: Test a mushroom for tenderness near the end of the cooking time. Taste the liquid carefully and add more salt or pepper if needed, remembering that the broth and butter may already provide plenty of seasoning.
Step 6: Stir in the chopped fresh parsley or sprinkle it over the mushrooms just before serving. The parsley adds color and a fresh contrast to the soft, buttery mushrooms.
Step 7: If you prefer a thicker, more concentrated sauce, move the cooked mushrooms and their liquid to a skillet. Simmer uncovered for 3 to 5 minutes, watching closely, then spoon the mushrooms and reduced sauce onto plates or toast.
Pro Tips for Tender, Flavorful Mushrooms
Do not overcrowd the slow cooker. Mushrooms release substantial moisture, so a cooker that is no more than about two-thirds full gives them room to cook more evenly and helps prevent an overly watery result.
Drying the mushrooms well after cleaning is worthwhile. Excess water clinging to their surface joins the liquid released during cooking, while properly dried mushrooms begin with a cleaner, more concentrated flavor.
Use the LOW setting when you have time for a gently cooked texture and the HIGH setting when dinner needs to come together sooner. Both settings work with the stated cooking windows, but begin checking near the early end because mushroom size and slow-cooker performance can vary.
Keep the lid closed as much as possible. Each time the lid is lifted, heat escapes and the cooking process may take longer, so reserve stirring for halfway through if you are available.
For a richer finish, use the skillet reduction method rather than cooking the mushrooms longer in the slow cooker. Simmering the liquid uncovered for 3 to 5 minutes concentrates the garlic-butter flavor without overcooking the mushrooms.
These mushrooms also pair wonderfully with seafood, especially a simple garlic butter baked cod. The tender mushrooms and flaky fish can share the same dinner plate with a green salad or steamed vegetables.
Serving Suggestions
Serve the mushrooms warm in a shallow bowl so plenty of the garlic-butter sauce remains easy to spoon. A final scattering of parsley makes the dish look fresh and inviting without adding extra preparation.
- Spoon them over grilled steak for a classic steakhouse-style side.
- Serve them beside roasted or pan-seared chicken.
- Toss them with cooked pasta and some of their buttery cooking liquid.
- Pile them onto toasted bread for a simple appetizer.
- Pair them with baked fish and a crisp green vegetable.
For a cozy slow-cooker menu, these mushrooms can sit beside easy slow-cooker meatballs. The mild mushroom sauce also works well with mashed potatoes, rice, or crusty bread for catching every last drop.
Storage and Reheating
Let leftover mushrooms cool briefly, then place them in a covered container and refrigerate them. Their texture is best within a few days, and the butter sauce may firm up when chilled.
Reheat the mushrooms gently in a saucepan or skillet over low to medium-low heat, stirring occasionally. Add a small splash of broth only if the sauce seems too thick, since the mushrooms will release additional moisture as they warm.
For the best texture, avoid prolonged high-heat reheating. If the sauce looks thin after warming, simmer the mushrooms uncovered for a few minutes until the liquid reaches the consistency you prefer.
Leftovers make an excellent topping for toast, baked potatoes, rice, or pasta. They can also be served with honey garlic baked chicken when you want a comforting meal with complementary garlic-forward flavors.
Common Questions
Can I use whole mushrooms? Yes. Small mushrooms can be added whole, while larger mushrooms should be halved so they cook more evenly and are easy to serve.
Does the butter need to be melted first? No. Add the butter directly to the slow cooker with the other ingredients. It will melt as the cooker heats and coat the mushrooms during cooking.
Why are my mushrooms watery? Mushrooms naturally release substantial moisture, and overcrowding can make the issue more noticeable. Keep the slow cooker no more than about two-thirds full, and reduce the liquid in a skillet uncovered for 3 to 5 minutes after cooking if needed.
Can I prepare this recipe on HIGH? Yes. Cook covered on HIGH for 1 1/2 to 2 hours, checking for tenderness near the beginning of that range. On LOW, the cooking time is 3 to 4 hours.
Easy Crockpot Garlic Butter Mushrooms
Ingredients
Method
- Wipe the mushrooms clean with a damp towel, or briefly rinse them and dry them thoroughly. Trim the stem ends, leaving small mushrooms whole and halving any larger mushrooms.
- Add the prepared mushrooms to the slow cooker. Place the butter, broth, minced garlic, thyme, oregano, basil, kosher salt, and black pepper over the mushrooms; the butter does not need to be melted first.
- Stir gently so the mushrooms are coated as evenly as possible. Cover and cook on LOW for 3 to 4 hours or on HIGH for 1 1/2 to 2 hours, stirring once halfway through if convenient.
- Check that the mushrooms are tender, then taste the cooking liquid and adjust the salt and pepper as needed. Stir in the fresh parsley or scatter it over the top just before serving.
- For a more concentrated sauce, transfer the cooked mushrooms and liquid to a skillet and simmer uncovered for 3 to 5 minutes. Serve warm as a side dish, over steak or chicken, with pasta, or on toasted bread.
Notes
Final Thoughts
This Easy Crockpot Garlic Butter Mushrooms recipe is proof that a few everyday ingredients can create a memorable side dish. With mushrooms, butter, garlic, broth, herbs, salt, pepper, and parsley, you get tender, savory bites that are ready with minimal effort.
Remember to clean and dry the mushrooms well, avoid filling the slow cooker beyond about two-thirds, and choose the LOW or HIGH cooking window that fits your schedule. If you want a more concentrated sauce, finish the cooked mushrooms in a skillet for 3 to 5 minutes.
Serve them beside steak, chicken, fish, meatballs, pasta, or toasted bread, and keep the recipe close for weeknight dinners, holiday meals, and casual gatherings. The warm garlic-butter aroma alone is enough to bring everyone to the table.