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mushroom butter on a serving platter
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5 from 1 vote

Mushroom Butter

This mushroom butter is a delicious and easy compound butter made with sautéed mushrooms, garlic, and fresh herbs. Make it now and freeze it for later!
Prep Time5 mins
Cook Time10 mins
Butter Softening + Cooling Time2 hrs
Total Time2 hrs 15 mins
Course: Condiment
Cuisine: American
Diet: Gluten Free, Vegetarian
Servings: 16 servings
Calories: 62kcal

Ingredients

  • ¼ lb unsalted butter, divided (1 stick)
  • 1 TB olive oil
  • 5 oz mushrooms, finely diced See Recipe Notes
  • 1 TB chives, diced Or swap 2 sprigs fresh thyme (removed from stem) or fresh rosemary (roughly chopped)
  • 1 tsp garlic powder (or finely minced garlic)
  • ¼ tsp sea salt

Instructions

  • Fully soften the butter by leaving it at room temperature for 30-60 minutes before proceeding.
    Melt about 1 tablespoon of butter and the oil on medium heat in a pan. The butter will begin to foam as it melts. When it stops foaming, add the mushrooms in a single layer.
    Don't crowd the mushrooms or they will steam instead of browning. If you have too many mushrooms to fit in a single layer, work in batches.
    Add Diced Mushrooms to a Pan
  • Toss the mushrooms frequently to make sure they cook evenly.
    When the mushrooms are lightly toasted, add the chives (or fresh herbs), garlic and salt. Toss and cook for about another minute, until the garlic is fragrant.
    Brown Mushrooms
  • Scoop the mushrooms into another pan or bowl. Use a rubber spatula to fold the softened butter into the mushroom mixture.
    Tip: If you accidentally melt all of the butter, simply set it aside and let it cool and harden before trying to form it into a log.
    Fold Into Softened Butter
  • To serve the same day:
    Pour butter into a serving bowl and refrigerate for at least an hour before serving. Note that butter will harden again in the fridge, so if you want it to be spreadable, take out of the fridge a few minutes before serving.
    Refrigerate leftovers and use within 5 days.
    To store for later:
    Freeze in a log: Chill butter until it's cool enough to form, and then roll it into a log. Use parchment paper or a rubber spatula to help you form the log. Wrap in parchment paper or plastic wrap, and store in an airtight container, and freeze for up to 6 months. When you're ready to use the butter, simply slice off the amount you want to use and put the rest back in the freezer.
    Freeze in portions: Scoop butter into portioned molds (like a silicone ice cube tray), and freeze until hardened. Pop the butter out of the molds, transfer to an airtight bag, and use the butter within 6 months. (I prefer this method for mushroom butter, because the frozen mushrooms can be difficult to cut through when frozen)
    mushroom butter on a serving platter

Notes

What Type of Mushrooms Should I Use? 
  • Inexpensive mushrooms like white button, cremini (baby bella), or shiitake
  • Mushroom stems (except for extra-hard, woody stems like on shiitake)
  • Save your expensive, foraged, or homegrown mushrooms for a recipe that highlights their delicate flavors more distinctly
Avoid wrapping the butter in wax paper, which (in my experience) tends to stick to the butter (especially when softening the whole log).
Nutrition information assumes 1 tablespoon of butter per serving.

Nutrition

Calories: 62kcal | Carbohydrates: 1g | Protein: 1g | Fat: 7g | Saturated Fat: 4g | Cholesterol: 15mg | Sodium: 38mg | Potassium: 29mg | Fiber: 1g | Sugar: 1g | Vitamin A: 185IU | Vitamin C: 1mg | Calcium: 2mg | Iron: 1mg