Oven-baked Portobello mushroom fries make a delicious, healthier appetizer. Thick portobello slices are coated in panko breadcrumbs, baked until golden and crisp, and served with a simple homemade aioli.
These baked Portobello mushroom fries have become a favorite snack in my kitchen. They aren’t deep-fried, but they are cut into fry-shaped strips, coated in a crisp panko and parmesan crust, and baked so the outside is crunchy while the inside stays juicy and flavorful. Best of all: they’re perfect for dipping.
They’re as straightforward to make as hand-cut potato fries, but much lighter because they’re baked. Serve them with a quick aioli or one of the other dipping suggestions below — they work well as a shared appetizer for holiday gatherings, a TV-time snack, or a light meal when you’re craving something crispy.
Quick summary
Portobello mushrooms are sliced, dredged in flour and egg, coated with panko, parmesan and Italian seasoning, then baked until golden. Serve with a simple aioli or your favorite dip.
This recipe is a great option for mushroom season and makes a satisfying shareable appetizer for Thanksgiving or any gathering.
How to make Baked Portobello Mushroom Fries
Prep: Preheat the oven to 425°F (225°C). Place a wire rack on a baking sheet (a rack helps them crisp evenly), lightly oil the rack with cooking spray and set aside.
Steps 1–3: Remove the stalks and scrape out the gills with a spoon. Slice each mushroom into 1/4-inch (about 6 mm) strips.
Step 4: Set up three bowls: one with flour, one with beaten eggs, and one with a mixture of panko, grated parmesan and Italian seasoning.
Step 5: Dredge each mushroom strip in flour, dip in egg, then press into the panko mixture so the coating adheres. Arrange strips on the prepared rack. If needed, wash hands between batches to avoid clumping.
Step 6: Bake for 10–14 minutes, until golden brown and crisp. Watch them closely toward the end so they don’t burn.
Other seasoning options
If you prefer different flavors, replace the Italian seasoning (and omit parmesan if desired) with about 2 teaspoons of one of these alternatives:
- Cajun seasoning
- Steak seasoning
- Taco or fajita seasoning
- Smoked or sweet paprika
Taste and add salt as needed, since different blends vary in saltiness.
Dipping sauce options
- Aioli — a lemony garlic aioli pairs especially well with Italian or steak seasoning.
- Chipotle Lime Mayo — mix 1/3 cup mayonnaise with 2/3 teaspoon lime juice and 3/4 teaspoon chili powder; great with taco, fajita or paprika flavors.
- Plain ketchup — a familiar favorite that works with many seasonings.
- Marinara sauce — a warm or room-temperature marinara complements Italian or steak-seasoned fries.
Tips
- No rack? Place the fries on a parchment-lined baking sheet and flip halfway through baking so both sides crisp.
- There will usually be leftover flour and panko; the recipe’s nutrition reflects this.
- To make gluten-free: use gluten-free flour and gluten-free breadcrumbs.
- To make dairy-free: omit parmesan or substitute with nutritional yeast for a savory note.
Baked Portobello Mushroom Fries
Ingredients
- 2 large portobello mushrooms
- 1/3 cup flour
- 2 eggs, beaten
- 3/4 cup panko breadcrumbs
- 1/4 cup freshly grated parmesan
- 1 1/2 teaspoons Italian seasoning
- Salt and pepper, to taste
Easy Aioli (optional)
- 1/3 cup mayonnaise
- 2 teaspoons fresh lemon juice
- 1/2 teaspoon lemon zest (optional)
- 1 small garlic clove, pressed or minced
- Freshly cracked pepper, to taste
- Sea salt (optional)
Instructions
- Preheat oven to 425°F (225°C). Place a rack on a baking sheet, lightly oil it and set aside.
- Remove stalks and scrape out the gills with a spoon. Slice mushrooms into 1/4-inch strips.
- Prepare three bowls: flour, beaten eggs, and a panko mixture with parmesan and Italian seasoning.
- Dredge each strip in flour, dip in egg, then press into the panko mixture. Arrange on the rack. Wash hands between batches if needed to avoid clumping.
- Bake 10–14 minutes until golden and crisp. Monitor closely to prevent burning.
Recipe Notes
- No rack? Use a parchment-lined baking sheet and flip the fries halfway through baking to crisp both sides.
- Leftover flour and panko are normal; the nutrition information accounts for this.
Other seasoning options
Swap Italian seasoning for 2 teaspoons of a different blend and omit parmesan if you like:
- Cajun seasoning
- Steak seasoning
- Taco or fajita seasoning
- Paprika
Adjust salt according to your seasoning blend.
Dipping sauce options
- Aioli — great with Italian or steak seasoning.
- Chipotle Lime Mayo — 1/3 cup mayo, 2/3 teaspoon lime juice, 3/4 teaspoon chili powder; pairs well with taco or fajita flavors.
- Ketchup — a simple classic.
- Marinara — works nicely with Italian or paprika-seasoned fries.
If you try this baked portobello mushroom recipe, please rate it and leave a comment to share how it turned out — feedback is always appreciated.
More healthy appetizer recipes you will love:
- Zucchini Meatballs
- Baba Ganoush
- Crispy Smashed Potatoes
- Healthy Salmon Patties
- Polenta Fries