Fajita-Stuffed Portobello Mushrooms

These Fajita-Stuffed Portobello Mushrooms are the delicious plant-based dinner you didn’t know you needed—until now! They capture all the sizzling, smoky goodness of fajitas, but tucked into a juicy, roasted portobello mushroom cap. Roasted bell peppers and onions bring on the classic flavor, while black beans add fiber and plant-powered protein. And the best part? These easy stuffed mushrooms are made using only two sheet pans, so you can keep cleanup short and sweet. Read on for the tips and tricks to make these mushrooms happen at home.

Tips from the EatingWell Test Kitchen

These are the key tips we learned while developing and testing this recipe in our Test Kitchen to make sure it works, tastes great and is good for you too! 

• Look for medium-size portobello caps that are shaped like a cup to hold the filling. If the mushrooms are flat, gently scoop out some of the flesh from the middle of the mushroom to hold the filling.
• Be sure to roast your mushrooms stem-side down before you flip them and add the filling. This allows moisture to drain from the mushrooms and prevents them from becoming soggy.
• We add smoked paprika to give the veggies that classic charred flavor. If you don’t have smoked paprika, chili powder can be used in its place.

Nutrition Notes

• Mushrooms contain selenium, an antioxidant that is known for its anti-inflammatory properties. Reducing inflammation is important, as it can help reduce risk of chronic diseases including cardiovascular disease and cancer. Mushrooms also contain potassium, which is key for muscle health and can lower blood pressure.
• Black beans provide plant-based protein in these stuffed mushrooms, but that’s not all they bring. The legumes also offer a type of fiber, resistant starch, which is known for supporting a healthy gut. Black beans are also great for heart health because they are free of saturated fat and high in fiber. 
• Bell peppers are a good source of carotenoids, including zeaxanthin and lutein, which support healthy vision and protect your eye health. Bell peppers are also high in vitamin C for immune health.