Spinach Stuffed Mushrooms Recipe

What happens when spinach artichoke dip and portobello mushrooms have a food baby?

These spinach stuffed mushrooms are born!

Your low-carb and vegetarian guests will be doing a little happy dance, too, when they find out they can eat as many as they want. 😉

(If you’ve got some guests who like their meat, you might want to check out these Crab Stuffed Mushrooms and Sausage Stuffed Mushrooms, too!)

Ingredients

For the exact measurements and detailed instructions, you can see the recipe card below.

• Mushrooms. Small-medium sized ones are the best to use if serving these mushrooms as a party appetizer or snack. Baby Bella are essentially miniature portobello mushrooms and are also referred to as “cremini mushrooms“. They have a stronger and meatier flavor than button and are a beautiful brown color. Button mushrooms, otherwise known as “white mushrooms,” are the most commonly found mushroom throughout the United States. These are a lighter color and have the least flavor. Either way, you’ll need about 1 pound, or roughly 15 mushrooms.
• Spinach. Frozen spinach is thawed and drained before being mixed into the filling.  You can use fresh, but you will need to make sautéed spinach before adding it.
• Artichoke. Using canned artichoke hearts is the easiest way.  Make sure you finely chop them before mixing them in. (You’ll have quite a bit of the can left that you can use up in these Spinach Artichoke Stuffed Chicken Breasts.)
• Cream cheese. The bulk of the filling is made up of this soft and creamy cheese.  Make sure it’s at room temperature for the easiest mixing. If you’re dairy-free you can also try substituting with a vegan variety instead.
• Shredded cheese. Mozzarella cheese is the recommended variety to use, but gruyere or even Monterrey Jack may be substituted.
• Mayo. Another major component of the filling is this egg-based spread.  You can also use Miracle Whip, Avocado oil-based mayo, or even a vegan substitute instead.
• Parmesan Cheese. We’re tripling down on the cheesy deliciousness by adding in this sharp and salty cheese.  Once again, if you’re dairy-free you can opt to use a vegan alternative or even a bit of nutritional yeast.

Cook’s Secret:  Did you know portobello, cremini, and button mushrooms are actually all the same species of mushroom?  (Agaricus bisporus) The only difference is the amount of time they have been allowed to age.

How to Make Spinach Stuffed Mushrooms

See the recipe card below for the full instructions, ingredient amounts, and a printable recipe.

• Strain the spinach. Place about twice as much frozen spinach as the recipe calls for into your towel.  Wring out the spinach over a bowl or in the sink.  Repeat this until you no longer get ANY liquid from the spinach. Measure the spinach AFTER it has been thoroughly drained to get the right amount you need for the recipe.
• Prepare the mushrooms. Clean with a damp paper towel to remove any dirt and debris. Remove the stems from the mushrooms by pulling them to one side and then snapping them off. You can also use a knife to cut them off if the stems do not snap easily. Place mushrooms on a large baking sheet that has been lined with parchment paper.

(Avoid soaking them in water as this will dilute their flavor. You can learn more about cleaning mushrooms as well as how to store mushrooms.)

• Mix the spinach artichoke filling. Mix together cream cheese, mayonnaise, Mozzarella cheese, garlic, salt, and pepper. Add in the artichoke hearts, spinach, and green onions. Stir until just combined.
• Bake in the oven. Fill each mushroom cap with 1 to 1 ½ tablespoons of the spinach filling mixture. Pay careful attention not to load them with more filling than they are tall to prevent overflow while baking. Sprinkle about a teaspoon of breadcrumbs over each filled mushroom. Bake in a preheated oven for 20 minutes, or until the tops become crispy and golden brown.

FAQs

More Party Food Appetizer Ideas

Are you throwing a party or holiday get-together?  Here are a few other appetizer ideas to go alongside these:

• Sausage Stuffed Mushrooms
• Air Fryer Sweet Potato Fries
• Maryland Crab Cakes
• Sheet Pan Nachos
• Air Fryer Chicken Nuggets
• Easy Tomato Bruschetta
• Roasted Tomato Salsa
• Air Fryer Pickles
• Smoked Salmon Dip
• Blueberry Goat Cheese Log
• Hot Spinach Artichoke Dip
• Pigs in a Blanket