Keto Stuffed Mushrooms (with Olives and Feta)

These Keto Stuffed Mushrooms are so delicious and easy to make, and stuffed mushrooms are definitely a treat! And these are so delicious, and they’re a perfect appetizer for game-day food or movie night!

PIN the Keto Stuffed Mushrooms to make them later!

For Super Bowl week, I’m choosing this amazing recipe for Keto Stuffed Mushrooms (with Olives and Feta) for my Friday Favorites pick. And if you’re looking for low-carb game-day food, this is one of many options for that on my site!

This meatless version of stuffed mushrooms with a Greek twist uses mushroom stems, olives, green onions, and Feta cheese for the stuffing. And I replaced the bread crumbs with Almond Meal to make these into Keto stuffed mushrooms! To make the stuffed mushrooms easier, we skipped the food processor and chopped ingredients by hand, then mashed them with an old-fashioned potato masher!

Mushrooms do release some water when they cook and almond meal won’t absorb that like breadcrumbs do. So be prepared that you might want to take a paper towel and blot off some liquid before serving the mushrooms. And when you’re not looking for game-day food, I think Keto Stuffed Mushrooms will make a delicious side dish for mushroom lovers any time of year; enjoy!

What ingredients do you need for this recipe?

(This is only a list of ingredients; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.

• large mushrooms
• green onions
• Pitted Kalamata Olives (affiliate link) or regular black olives
• Feta cheese
• Greek Seasoning (affiliate link)
• Almond Flour (affiliate link) 
• Olive Oil (affiliate link)

What olives are best for the Keto Stuffed Mushrooms?

I got the original recipe from a Greek friend, and we first made these low-carb stuffed mushrooms with Kalamata olives. But the second time we just used a can of regular black olives, so take your pick on the olives!

Do you have to bake Keto Stuffed Mushrooms in a cast-iron pan?

We cooked the mushrooms in a large cast-iron pan so we could serve them in the pan. But if you don’t have a pan like that just use any type of baking sheet.

How low in carbs are the Keto Stuffed Mushrooms?

These mushrooms are a delicious treat with only 1 net carb per mushroom, so make sure you make plenty for everyone to enjoy!

How to make Keto Stuffed Mushrooms (with Olives and Feta):

(This is only a summary of the steps for the recipe; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.)

1. Preheat oven to 450F/230C.
2. Wash mushrooms if needed, pat dry, gently remove stems, and bake stem-side down.
3. Cook 5-6 minutes, or until mushrooms barely soften and some water has evaporated.
4. While mushrooms cook, chop olives, mushroom stems, and green onions, and crumble the Feta.
5. Combine those ingredients with Almond Flour (affiliate link), Greek Seasoning (affiliate link), and olive oil.
6. Stir together, then use potato masher (affiliate link) to mash the stuffing ingredients together.
7. Remove mushrooms from the oven, turn them over.
8. Use a spoon to stuff each mushroom with filling. (Hold over the bowl when you stuff so you don’t make a mess.)
9. Put mushrooms back into the oven and cook until they’re are cooked through and stuffing is piping hot, about 8-12 minutes.
10. Remove from oven and blot the pan with paper towels if there’s excess liquid.
11. Serve the Keto Stuffed Mushrooms hot, and wait for compliments!

More Low-Carb Super Bowl Food:

• Amazing Low-Carb and Keto Chili Recipes
• Fantastic Low-Carb Meatballs
• 50+ Keto Appetizer Recipes

Continue to Content

Print

Yield: 20 stuffed mushrooms

Keto Stuffed Mushrooms (with Olives and Feta)

Prep Time 10 minutes

Cook Time 18 minutes

Total Time 28 minutes

Keto Stuffed mushrooms are a winner for parties and game-day food! And these stuffed mushrooms with Greek flavors are so delicious and easy to make that you'll want to make them just for the family as well!

Ingredients

• 20 large mushrooms, washed and stems removed
• 1/2 cup chopped mushroom stems
• 1/4 cup chopped green onions
• 1/2 cup chopped Kalamata olives or regular black olives
• 1/2 cup Feta cheese
• 1 tsp. Greek Seasoning
• 1/2 cup Almond Flour (See note for more about these ingredients.)
• drizzle of olive oil if needed

Instructions

1. Preheat oven to 450F/230C. Wash mushrooms, remove stems, spray pan lightly with oil-based non-stick spray or mist with olive oil, and place mushrooms stem-side down on baking sheet or cast-iron pan
2. Bake mushrooms 5-6 minutes, just long enough to dry out some of the water.
3. While mushrooms cook, chop the olives, mushroom stems, and green onions, and crumble the Feta. Combine chopped ingredients with the  Almond Flour (affiliate link), Greek Seasoning, and a drizzle of olive oil.
4. Stir to combine, then use a potato masher (affiliate link) to mash the stuffing ingredients together. If the mixture seems dry, use a couple of drizzles of olive oil to make it stick together.
5. Fill inside of each mushroom cap with filling, pressing down so it stays in the mushrooms. (If you hold mushrooms over the bowl when you stuff them you can avoid making a mess in the pan.)
6. Bake mushrooms for 8-12 minutes, until mushrooms are hot and slightly browned and cheese is partially melted. Blot the pan with paper towels if there's excess liquid when you remove them from the oven.
7. Serve the Keto Stuffed Mushrooms immediately and wait for compliments.

Notes

Almond Flour (affiliate link) is sold at Costco now in many places.

The original stuffed mushrooms recipe with breadcrumbs came from a Greek friend; updated to a low-carb version by Kalyn, Jake, and Kara in 2018.

Nutrition Information

Yield

20

Serving Size

1
Amount Per Serving Calories 44Total Fat 4gSaturated Fat 1gUnsaturated Fat 3gCholesterol 3mgSodium 133mgCarbohydrates 2gFiber 1gSugar 1gProtein 2g

Nutrition information is automatically calculated by the Recipe Plug-In I am using. I am not a nutritionist and cannot guarantee 100% accuracy, since many variables affect those calculations.

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Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Replacing the breadcrumbs in the original recipe with Almond Flour makes these Keto Stuffed Mushrooms suitable for low-carb or Keto diets. Nut flours are phase two for the original South Beach Diet, but you’re not eating much of it in a few mushrooms, so I wouldn’t worry about enjoying a few of these stuffed mushrooms, even for phase one!

Find More Recipes Like This One:
Use Appetizers to find more low-carb recipes like this one! Use the Diet Type Index to find recipes suitable for a specific eating plan. You might also like to follow Kalyn’s Kitchen on Pinterest, on Facebook, on Instagram, on TikTok, or on YouTube to see all the good recipes I’m sharing there.

Historical Notes for this Recipe:
This recipe for these tasty Keto Stuffed Mushrooms was first posted in 2018. It was last updated with more information in 2026.