Portobello fajitas recipe

Added 18 October 2026

Portobello fajitas are a hearty, plant-based twist on the classic Mexican-American sizzle-plate meal. These earthy mushrooms are sautéed with colorful bell peppers and savory spices, perfect for a fast and satisfying weeknight dinner.

Vegan Vegetarian Pescetarian Gluten-Free Dairy-Free Nut-Free Egg-Free Soy-Free

95

Nutrient score: Excellent

Goodness for its calories, 25 to 100.

How is this worked out?

The nutrient score shows how much goodness a recipe gives for its calories, from 25 to 100. Every recipe gets at least 25. It is the same for everyone.

It adds up how much of 11 nutrients people need the recipe gives for its calories: protein, fibre, vitamins A, C and E, calcium, iron, potassium, magnesium, folate and zinc. Each counts up to a full day’s worth for the calories. It then takes points off for saturated fat, added sugar and sodium above a fair share for the calories.

75 and over: Excellent. 60 to 74: Very good. 45 to 59: Good. 35 to 44: Fair. 25 to 34: Low.

The formula (from the recipe’s values per 100 g):

  1. Share of the day: the recipe’s kcal per 100 g ÷ 2,000 (under 40 kcal per 100 g, such as a herb or tea, counts as 40 kcal).
  2. 11 nutrients to encourage: protein (50 g), fibre (28 g), vitamin A (900 mcg), vitamin C (90 mg), vitamin E (15 mg), calcium (1,300 mg), iron (18 mg), potassium (4,700 mg), magnesium (420 mg), folate (400 mcg) and zinc (11 mg). For each: amount ÷ (Daily Value × share), at most 1. Add them up.
  3. 3 nutrients to limit: saturated fat (20 g), added sugar (50 g) and sodium (2,300 mg). For each: amount ÷ (limit × share) − 1, only when above 0 and at most 3. Add them up.
  4. Result = 100 × (step 2 − 2 × step 3) ÷ 11, kept between 0 and 100.
  5. Score = 25 + 0.75 × result, rounded. The scale runs from 25 to 100 instead of 0 to 100: every edible recipe gets at least 25, and the order doesn’t change.

It follows the Nutrient Rich Foods index (NRF 9.3) with the U.S. FDA Daily Values for a 2,000 kcal day. Different from the published index: folate and zinc are added (11 nutrients instead of 9), the nutrients to limit count double and each at most three times its share, the 40 kcal floor, and the 25 to 100 scale. When some of the values it needs are unknown, the score is shown as “about”.

A recipe’s values are worked out from its ingredients, whose values are estimates.

Sources: Drewnowski A. Defining nutrient density: development and validation of the Nutrient Rich Foods index. J Am Coll Nutr. 2009;28(4):421S-426S; U.S. FDA, Daily Value on the Nutrition and Supplement Facts Labels.

A low score doesn’t make a recipe bad: treats and festive dishes have their place. Use the score to compare similar recipes. In the GapPlate app you also see how much of the gaps in your day a serving fills.

Units:

Ingredients

  • 2 tbsp Olive oil (27 g)
  • 4 large Portobello mushroom (400 g)
  • 1 large Red bell pepper (170 g)
  • 1 medium Onion Yellow (150 g)
  • 1 tbsp Red chili powder (6.7 g)
  • 1 tsp Cumin (2 g)
  • 1 tsp Garlic powder (2.5 g)
  • Salt, to taste
  • 1 tbsp Lime juice (15 g)
  • Ingredients in total: 774 g
  • Weight gained in cooking: 26 g (water soaked up)
  • Net weight (cooked): 800 g · 4 servings of about 200 g

Method

  1. Clean the mushrooms and slice them into half-inch strips, then slice the bell pepper and onion into thin strips.
  2. Heat the olive oil in a large skillet over medium-high heat until it shimmers.
  3. Add the onion and bell pepper to the skillet, cooking for 5 to 7 minutes until the edges start to soften and brown.
  4. Add the mushroom strips to the pan and continue cooking for another 5 minutes until they have released their moisture and are tender.
  5. Sprinkle the chili powder, cumin, garlic powder, and salt over the vegetable mixture and toss well to coat, cooking for 1 minute until fragrant.
  6. Remove the pan from the heat, drizzle with the lime juice, and serve immediately in warm tortillas.

Nutrition

NutrientPer serving (200 g)Per 100 g
Calories120 kcal59.9 kcal
Protein3.37 g1.68 g
Water176 mL88 mL
Sodium38.4 mg19.2 mg
Total Carbohydrates11.8 g5.88 g
Total Fat7.62 g3.81 g
Sugar5.97 g2.99 g
61 more nutrients

Carbohydrates

NutrientPer serving (200 g)Per 100 g
Added Sugar0 g0 g

Minerals

NutrientPer serving (200 g)Per 100 g
Iron1.33 mg0.66 mg
Calcium27.4 mg13.7 mg
Magnesium22.9 mg11.4 mg
Potassium562 mg281 mg
Iodine0 mcg0 mcg
Phosphorus152 mg76 mg
Zinc0.75 mg0.37 mg
Chloride10.7 mg5.35 mg
Selenium9.8 mcg4.9 mcg
Copper0.34 mg0.17 mg
Fluoride0.004 mg0.002 mg
Manganese0.25 mg0.13 mg
Molybdenum0.21 mcg0.1 mcg
Chromium0.21 mcg0.1 mcg

Fats

NutrientPer serving (200 g)Per 100 g
Trans Fat0 g0 g
Saturated Fat1.11 g0.55 g
Cholesterol0 mg0 mg
Monounsaturated Fat5.02 g2.51 g
Omega-3 Fatty Acids0.075 g0.038 g
Polyunsaturated Fat0.95 g0.47 g
Omega-6 Fatty Acids0.83 g0.42 g
DHA (Docosahexaenoic Acid)0 mg0 mg
EPA (Eicosapentaenoic Acid)0 mg0 mg
ALA (Alpha-Linolenic Acid)0.069 g0.034 g
Arachidonic Acid0 mg0 mg
Medium-Chain Triglycerides0 g0 g
Omega-9 Fatty Acids4.99 g2.49 g

Fibre

NutrientPer serving (200 g)Per 100 g
Fiber3.44 g1.72 g
Soluble Fiber0.93 g0.46 g
Insoluble Fiber3.48 g1.74 g

Vitamins

NutrientPer serving (200 g)Per 100 g
Vitamin B120 mcg0 mcg
Vitamin D0.2 mcg0.1 mcg
Vitamin C61 mg30.5 mg
Folate (B9)44.8 mcg22.4 mcg
Niacin (B3)4.44 mg2.22 mg
Vitamin A92.2 mcg RAE46.1 mcg RAE
Thiamin (B1)0.13 mg0.066 mg
Vitamin B60.42 mg0.21 mg
Riboflavin (B2)0.55 mg0.28 mg
Pantothenic Acid (B5)1.71 mg0.86 mg
Vitamin E2.19 mg1.09 mg
Vitamin K8.15 mcg4.07 mcg
Biotin (B7)15.6 mcg7.78 mcg
Beta-Carotene1,385 mcg693 mcg

Others

NutrientPer serving (200 g)Per 100 g
Choline19.5 mg9.74 mg
Leucine237 mg119 mg
Lysine176 mg87.8 mg
Polyphenols205 mg102 mg
Methionine52.9 mg26.5 mg
Oxalates5.56 mg2.78 mg
Threonine155 mg77.5 mg
Tryptophan44.6 mg22.3 mg
Valine190 mg95 mg
Flavonoids46.2 mg23.1 mg
Histidine185 mg92.7 mg
Lutein / Zeaxanthin0.26 mg0.13 mg
Lycopene0.2 mg0.1 mg
Phenylalanine175 mg87.7 mg
Purines61.8 mg30.9 mg

Proteins

NutrientPer serving (200 g)Per 100 g
Isoleucine161 mg80.3 mg

Worked out from the ingredients with the GapPlate food library, per 100 g of the cooked dish. Estimates, not medical advice.

Share this recipe

Show the nutrient score on your own website or blog

Nutrient score of Portobello fajitas recipe

Copy this into your page (in the HTML or “Custom HTML” block). The badge links to this recipe and updates by itself.

Download the badge Download a square picture

← All recipes · Add a recipe

Add a recipe Add from a link My recipes

GapPlate Recipes Privacy Policy · Terms and Conditions