Refresh your appetizer options with this beginner-friendly recipe that delivers cheesy, savory, low-carb snacks in less than an hour!
Mushrooms are the mavericks of the culinary world. They’re not plants or animals, they don’t need sunlight, and they reproduce by launching clouds of microscopic spores instead of seeds. And while a mushroom might pop up overnight after rain, most of its life is spent in underground networks called mycelium, sometimes stretching for miles beneath the forest floor. It’s this secret world beneath our feet—and their mysterious, earthy flavor—that makes mushrooms true culinary outliers.
This recipe for keto stuffed mushrooms celebrates these quirky, umbrella-shaped enigmas. They serve as low-carb vessels for cheesy, savory fillings that elevate any appetizer spread. Whether you’re a die-hard fan of fungi—as I am—or you’re just looking for an easy, filling snack that won’t blow your day’s carb allowances, this one’s for you.
In less than an hour, using simple ingredients you likely already have on hand, you can serve up delicious finger food with sophisticated flair.
Tips for custom stuffed mushrooms
Stuffed mushrooms are highly versatile appetizers. You can alter the type or size of the mushrooms, and experimenting with various fillings keeps them interesting every time.
Typically, white mushroom caps that measure two to three inches across make for the easiest filling and handling. But you could use smaller varieties for bite-sized snacks or go big with portobellos for a fork-and-knife version that passes as a meal.
Swap the ham in this recipe for crumbled cooked sausage, bacon, or shredded chicken. Instead of cheddar cheese, mix or match your faves, like Parmesan, Gruyère, Swiss, feta, goat cheese, or blue cheese. Add finely chopped spinach, kale, or sun-dried tomatoes for extra flavor and color without upping the carbs too much. Bring in a little crunch with chopped walnuts, pecans, or pine nuts. Or top your appetizer with an aromatic sprinkle of fresh parsley, basil, thyme, or chives.
How do I store leftovers?
Let your stuffed mushrooms cool completely before storing, but don’t leave them at room temp longer than 2 hours. Store leftovers in a single layer inside an airtight container in the fridge for up to 3 days. Reheat in a 350°F oven or air fryer until melty and piping hot throughout.
I do not recommend freezing baked stuffed mushrooms, as they tend to become mushy and watery from the freeze-thaw process—but freezing unbaked stuffed mushrooms for up to 3 months is a great make-ahead option. Arrange them in a single layer on a baking sheet, flash freeze until solid (about 1-2 hours), then transfer them to a freezer-safe container or resealable bag with as much air removed as possible. Thaw overnight in the fridge before baking, or bake directly from frozen, adding a few minutes to the cook time.
Similar recipes to try
Hungry for more low-carb appetizers? Swap the breading for a zesty dry rub and hot sauce on these Low-Carb Keto Crispy Chicken Wings. Harness the flavorful power of pork rinds to amp up the crispiness of this Keto Mozzarella Cheese Sticks Recipe. Let your slow cooker do the heavy lifting in this easy, cheesy Keto Buffalo Chicken Dip Recipe.
Keto Stuffed Mushrooms Recipe
Ingredients
- 10 large white mushrooms
- 2 tablespoons olive oil
- Salt and pepper optional, to taste
- 1 cup ham chopped
- 1 1/2 cups cheddar cheese shredded
- 2 ounces cream cheese softened
- 1/4 cup green onions chopped
Instructions
- Preheat oven to 400°F. Prepare a baking sheet with a lining of parchment or a coating of nonstick cooking spray.
- Gently wipe or rinse mushrooms to remove surface dirt. Pat dry with a paper towel. Remove the stems and, if desired, carefully scrape out some of the gills with a small spoon to make more room for the filling.
- Toss mushroom caps in olive oil until coated, then place them hollow side up on the prepared baking sheet. Optionally season them lightly with salt and pepper.
- Bake mushroom caps for 5 minutes to release excess moisture. Remove from oven and drain any liquid from the baking sheet before stuffing.
- In a large bowl, mix together the ham, cheddar cheese, cream cheese, and green onions until well combined.
- Divide the filling equally among the mushroom caps, mounding slightly.
- Bake for about 15-20 minutes, or until the cheese is melted and bubbly and the mushrooms are tender.
- Remove from oven and let stand for a 2-3 minutes to firm up the filling and make them easier to handle. Serve hot.
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