Low FODMAP Beef Fajitas Recipe 

This sizzling Low FODMAP Beef Fajitas recipe is made with tender flank steak, garlic-infused olive oil, fresh lime juice, colorful bell peppers, and scallion tops. The result is a savory and tangy main dish that is full of Mexican-inspired flavor without causing tummy trouble. It is perfect for a quick weeknight dinner and makes enough for 4 hungry people.

Low FODMAP Beef Fajitas Ingredients

For the Beef & Marinade:

• 500 g (1 lb) beef flank steak or sirloin, thinly sliced against the grain
• 2 tablespoons garlic-infused olive oil (oil only, no floating garlic pieces)
• 2 tablespoons fresh lime juice
• 1 tablespoon gluten-free tamari or soy sauce (ensure no wheat or garlic)
• 1 teaspoon ground cumin
• 1 teaspoon smoked paprika
• 1/2 teaspoon dried oregano
• 1/2 teaspoon chili powder (pure spices only, no onion/garlic powder added)
• 1 teaspoon maple syrup
• 1/2 teaspoon salt, plus more to taste
• 1/4 teaspoon black pepper

For the Vegetables:

• 1 small green bell pepper, thinly sliced
• 1 small red bell pepper, thinly sliced
• 2–3 green onions (scallions), green tops only, sliced
• 1 tablespoon garlic-infused olive oil, for cooking

For Serving:

• 8 small corn tortillas (certified gluten-free)
• 1/2 cup lactose-free sour cream or Greek yogurt
• Fresh cilantro leaves
• Lime wedges
• Optional: Diced tomato (keep to small portions)
• Optional: Sliced avocado (1-3 tablespoons per person)

How To Make Low FODMAP Beef Fajitas

1. Marinate the beef: In a medium bowl, whisk together the garlic-infused oil, lime juice, tamari, cumin, smoked paprika, oregano, chili powder, maple syrup, salt, and pepper. Add the sliced beef and toss until every piece is well coated. Let it sit at room temperature for 15 minutes.
2. Prep the vegetables: While the beef marinates, slice your red and green peppers into thin strips. Chop the green tops of the scallions and set them aside.
3. Warm the tortillas: Heat the tortillas in a dry pan over low heat or wrap them in foil and place them in a low oven. Keep them covered so they stay soft.
4. Cook the peppers: Heat 1 tablespoon of garlic-infused oil in a large skillet over medium-high heat. Add the bell pepper strips and a pinch of salt. Cook for 4–5 minutes until they are slightly soft but still colorful. Move them to a plate.
5. Cook the beef: In the same skillet, turn the heat to medium-high. Add the beef in a single layer. Cook for 4–6 minutes, stirring occasionally, until the meat is browned and cooked through.
6. Combine the ingredients: Add the cooked peppers back into the skillet with the beef. Toss in the green scallion tops. Stir everything together for 1–2 minutes until hot.
7. Assemble the fajitas: Serve the beef and pepper mixture immediately in warm tortillas. Top with lactose-free sour cream, cilantro, and a squeeze of lime juice.

Recipe Tips

• Slice Against the Grain: When cutting your flank steak, look for the direction the muscle fibers run. Slice across them, not with them. This breaks the fibers and makes the meat much more tender and easy to chew.
• Check Your Spices: Many store-bought chili powders contain hidden onion or garlic powder. Always check the label to ensure it contains only pure chili peppers and safe spices like cumin.
• Use Garlic-Infused Oil: This is the secret to getting garlic flavor on a low FODMAP diet. The fructans (the part that hurts your stomach) are water-soluble but not oil-soluble, so the oil adds flavor without the gut symptoms.
• Green Tops Only: Only the green tops of green onions (scallions) are low FODMAP. The white bulb contains high amounts of fructans and should be avoided for this recipe.

What To Serve Beef Fajitas

These fajitas are a complete meal, but you can add sides to stretch the servings further. Serve them with a side of steamed white rice mixed with fresh lime juice and chopped cilantro. You could also serve a simple green salad with a vinegar and oil dressing. For a crunchy side, offer plain corn tortilla chips with a small amount of homemade salsa (using only tomatoes, cilantro, and lime). A side of plain corn on the cob is also a sweet and complementary addition to the spicy beef.

How To Store Low FODMAP Beef Fajitas Leftovers

• Refrigerate: Store the cooked beef and vegetable mixture in an airtight container in the refrigerator for up to 3 to 4 days. Keep the tortillas stored separately in a sealed bag to prevent them from getting soggy.
• Freeze: You can freeze the cooked beef and pepper mixture. Place it in a freezer-safe container or bag for up to 3 months. Thaw it in the refrigerator overnight before reheating in a skillet.

Low FODMAP Beef Fajitas Nutrition Facts

Serving Size: 2 fajitas (approximate)

• Calories: 380 kcal
• Total Fat: 16g
• Saturated Fat: 4g
• Cholesterol: 65mg
• Sodium: 620mg
• Total Carbohydrate: 32g
• Dietary Fiber: 4g
• Sugars: 4g
• Protein: 28g

Frequently Asked Questions

• Can I use chicken instead of beef? Yes, absolutely. You can use sliced chicken breast or thighs with the exact same marinade. Just ensure the chicken is cooked thoroughly until it is no longer pink in the center.
• Is avocado low FODMAP? Avocado is safe in small servings. Monash University guidelines suggest that about 1/8 of a whole avocado (approx. 30g) is generally low in FODMAPs. Stick to a few thin slices to keep your meal gut-friendly.
• Why can’t I use regular garlic? Regular garlic contains fructans, which are carbohydrates that ferment in the gut and cause symptoms for people with IBS. Garlic-infused oil provides the flavor without the fructans.
• Can I use flour tortillas? Most wheat flour tortillas are high in FODMAPs (fructans). It is best to stick to corn tortillas or look for gluten-free tortillas that do not contain high-FODMAP flours like soy or chickpea flour.

Try More Recipes:

• Low FODMAP Beef and Broccoli Recipe
• Low FODMAP Baked Tofu Recipe
• Low Fodmap Chicken Pasta Salad Recipe

Low FODMAP Beef Fajitas Recipe 

Recipe by Sabrine HajriCourse: Dinner, MainCuisine: American, Mexican-Inspired

Servings

4

servings

Prep time

20

minutes

Cooking time

15

minutes

Calories

380

kcal

These Low FODMAP Beef Fajitas feature juicy marinated flank steak and charred bell peppers. Using garlic-infused oil and green onion tops allows you to enjoy classic Mexican flavors without digestive issues. It is a quick, healthy, and safe dinner for the whole family.

Ingredients

• For the Beef & Marinade:

• 500 g beef flank steak, sliced thin
  

• 2 tbsp garlic-infused olive oil
  

• 2 tbsp fresh lime juice
  

• 1 tbsp gluten-free tamari
  

• 1 tsp cumin
  

• 1 tsp smoked paprika
  

• 1 tsp maple syrup

• For the Veggies:

• 1 green bell pepper, sliced
  

• 1 red bell pepper, sliced
  

• 2-3 green onions, green tops only

• For Serving:

• 8 corn tortillas

Directions

• Marinate: Whisk marinade ingredients and coat the beef. Let sit for 15 minutes.
  
• Cook Peppers: Sauté peppers in garlic oil until soft. Remove from pan.
  
• Cook Beef: Brown the beef strips in the same skillet over medium-high heat.
  
• Combine: Return peppers to the pan, add scallion tops, and toss to combine.
  
• Serve: Serve hot in warm tortillas with lactose-free sour cream and cilantro.