Keto Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. 
Serving Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Steak Fajitas
Sizzling keto steak fajitas with marinated beef strips and charred peppers served in lettuce wraps.
Contains common allergens
In the app, Listahan checks these against your household automatically.
Good to know
- Ready in under 30 minutes
Matched from this dish's own ingredients and timing. Browse more: 30-minute meals
Instructions
6 steps- 1
Toss the sliced steak with 1 tablespoon of the oil, the fajita seasoning, and half the lime juice; let marinate for at least 15 minutes.
- 2
Heat the remaining oil in a large cast-iron skillet or griddle over high heat until nearly smoking.
- 3
Sear the steak in a single layer, working in batches if needed, until well browned but still pink in the center, about 2 minutes per side; remove and set aside.
- 4
In the same hot skillet, cook the peppers and onion until charred at the edges and just tender-crisp, 5 to 6 minutes.
- 5
Return the steak to the skillet, toss everything together, and finish with the remaining lime juice and a pinch of salt.
- 6
Serve sizzling hot in lettuce leaves or low-carb tortillas.
Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Listahan Family Score™
70/100
Good fit for most families
Score reflects how well this recipe fits a typical busy household. In the app, your Family Score is personalized to your household's allergens, kids, and pantry.
Nutrition
per serving460
Calories
43 g
Protein
0 g
Carbs
32 g
Fat
Estimated per serving. Actual values depend on the brands and portions you use.
Listahan cooking guide
Chef notes & practical guide
Technique notes, ingredient swaps, serve-alongside ideas, storage guidance, and equipment for this recipe.
Cultural context
Fajitas take their name from the Spanish word for the skirt steak cut itself, first popularized by Texas ranch hands and vaqueros who grilled the tough, flavorful cut over open fire and sliced it thin against the grain. The dish later spread through Tex-Mex restaurants, expanded to include peppers and onions grilled alongside the meat and served on a sizzling platter.
Listahan note
This version marinates the skirt steak briefly in lime juice and garlic before grilling it hot and fast, since skirt steak needs a short, high-heat sear rather than a long, slow cook to stay tender.
Technique cues
- Marinating skirt steak for 30 minutes to a few hours in an acidic marinade tenderizes the surface without turning the interior mushy from over-marinating.
- Grilling or searing over high heat for just a few minutes per side develops a char on the outside while keeping the center at a proper medium doneness.
- Slicing the cooked steak thinly against the grain is essential, since skirt steak's long muscle fibers turn chewy if cut with the grain.
- Charring the peppers and onions in the same hot pan the steak was cooked in picks up the meat's rendered fat and browned bits.
Kitchen flow
- Parallel prep
- Prep any side dishes while Steak Fajitas finishes with the sour cream to serve — the hands-off cook time is the window to use. The marinate step is what sets the pace here.
- Make-ahead
- Steak Fajitas reheats well, so cooking it a day ahead and finishing it just before serving is a reasonable way to spread out the work. This one leans on the sour cream to serve. Everything else is quick — the marinate is the one step that takes real time.
- Leftover move
- Leftover Steak Fajitas reheats well covered on the stove or in the oven with a splash of liquid; avoid the microwave, which tends to toughen the flank steak on a fast reheat. This one leans on the sour cream to serve. Everything else is quick — the marinate is the one step that takes real time.
- Cleanup rhythm
- Deglaze the pan used for Steak Fajitas with a splash of water or broth right after cooking — it lifts the browned bits before they dry on and saves scrubbing later. This one leans on the sour cream to serve. Plan around the marinate; that's the slow part.
Ingredient brief
Role, handling, and swap guidance for each key ingredient.
1 lb flank steak
Flavor support
Purpose: lb flank steak supports the balance of Steak Fajitas and should taste integrated.
Handling: Prep before heat is high so the cooking step can move without rushing.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
3 bell peppers (mixed colors
Aromatic base
Purpose: bell peppers (mixed colors creates the savory foundation before stronger ingredients are added.
Handling: Wash, trim, and cut evenly so the pieces cook at the same pace.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
sliced)
Flavor support
Purpose: sliced) supports the balance of Steak Fajitas and should taste integrated.
Handling: Prep before heat is high so the cooking step can move without rushing.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
1 large onion
Aromatic base
Purpose: large onion creates the savory foundation before stronger ingredients are added.
Handling: Wash, trim, and cut evenly so the pieces cook at the same pace.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
2 cloves garlic
Aromatic base
Purpose: cloves garlic creates the savory foundation before stronger ingredients are added.
Handling: Wash, trim, and cut evenly so the pieces cook at the same pace.
Adaptation: Use the closest fresh equivalent and expect a modest shift in flavor or texture.
Technique notes
- Let the steak rest for five minutes after cooking before slicing, so the juices redistribute instead of running out onto the cutting board.
- Serve on a hot cast-iron platter if possible, since the sizzle when it reaches the table is part of the traditional presentation.
- Warm any tortillas or wraps just before serving so they stay pliable rather than cracking when folded.
Ingredient swaps
- Dairy-free direction
- Swap the butter lettuce leaves for a neutral dairy-free butter or oil and a full-fat plant milk (oat or coconut work best for body) — the texture shifts slightly but the dish holds together. This one leans on the smoked paprika.
- Lower-sodium direction
- Season lighter on salt than the recipe calls for, then adjust right before serving — it's easier to add more than to fix an oversalted batch. This one leans on the smoked paprika.
- Weeknight shortcut
- For a faster version, prep the longest-cooking component a day ahead so the night-of cook is mostly assembly and finishing. This one leans on the smoked paprika.
Serve alongside
- Fresh fruit
- Cucumber slices
- Plain rice crackers
- Cold water
- Sparkling water
Serving suggestions only — check pairings for your household's allergens.
Storage & reheating
- Refrigerate covered for up to 3 days when the drink is brewed, blended, or mixed ahead.
- Stir or shake before serving over fresh ice.
- Do not freeze unless the recipe is meant to become pops or granita.
Equipment
- Pitcher or blender
- Measuring cup
- Long spoon
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