Slow-Cooker Sizzling Flank Steak and Tri-Color Bell Pepper Fajitas Tips, FAQ & printable recipe

Tips for success

To enhance the smoky profile of the dish, consider adding a small amount of liquid smoke or extra smoked paprika to the seasoning mix.

If you prefer a more vibrant presentation, add a handful of fresh cilantro to the mixture just before serving, as the heat of the fajitas will lightly wilt the herbs and release their aromatic oils. This simple addition provides a fresh contrast to the deep, savory flavors of the slow-cooked meat.

For a more controlled flavor, taste the juices in the slow cooker before serving and adjust the seasoning with additional salt or lime juice if necessary.

If the sauce is too thin, you can remove the meat and vegetables and simmer the remaining liquid on the stovetop for a few minutes to reduce it into a thicker, more concentrated glaze. This technique ensures that your fajitas are perfectly coated in a delicious, flavorful sauce every time.

Variations

• Spicy Fajitas: Increase the heat by adding two diced serrano peppers or an extra tablespoon of chipotle powder to the seasoning mix. This variation provides a deeper, spicier kick that complements the tender steak perfectly.
• Vegetarian Fajitas: Substitute the flank steak with sliced portobello mushrooms and extra zucchini strips. These vegetables absorb the fajita spices beautifully, creating a satisfying and savory vegetarian-friendly version of the classic dish.

Storage and make-ahead

Fridge

Store in an airtight container in the refrigerator for up to 3 days.

Freezer

Store in a freezer-safe container for up to 3 months. Thaw in the refrigerator overnight before reheating.

Reheat

Reheat in a skillet over medium heat or in the microwave until the steak is warmed through, about 2-3 minutes.

Store any leftovers in an airtight container in the refrigerator to maintain freshness. Ensure the food has cooled to room temperature, but do not leave it out for more than two hours. Properly stored, the fajita mixture will retain its flavor and texture for up to three days, making it an excellent option for quick lunches or another dinner throughout the week. Always check for quality before reheating and serving.

You can prepare the ingredients up to 24 hours in advance by slicing the steak, peppers, and onions, and storing them in separate airtight containers in the refrigerator.

When you are ready to cook, simply combine all the prepared components in the slow cooker, add the seasonings and lime juice, and start the cooking process. This approach saves significant time on busy days, allowing you to have a hearty meal ready with minimal effort.

Serving ideas

When serving, present the fajita mixture in a warm serving bowl alongside a platter of charred flour tortillas. Arrange the toppings in small bowls so that everyone can customize their own fajitas according to their preferences. The warm tortillas serve as the perfect vessel for the tender steak and softened vegetables, while the cool sour cream and fresh lime provide a necessary balance to the rich, smoky flavors of the meat.

Consider serving this dish with a side of cilantro-lime rice or a fresh green salad to complete the meal. The versatility of these fajitas allows them to be served in a casual family-style setting, making it easy for everyone to build their own plates.

Whether you are feeding a large family or hosting a small gathering, this slow-cooker recipe provides a reliable and delicious way to bring everyone together for a satisfying dinner.

Frequently asked questions

Recipe card

Slow-Cooker Sizzling Flank Steak and Tri-Color Bell Pepper Fajitas

Prep 10 minCook 6 hRest 5 minTotal 6 h 15 minServes 6

Ingredients

• 2 lb flank steak, sliced into strips
• 3 bell peppers (red, yellow, and green), sliced
• 1 sweet onion, sliced
• 1 jalapeño, diced
• 3 tbsp smoky fajita seasoning
• 1 fresh lime juice
• flour tortillas, for serving
• 1 cup toppings (guacamole, sour cream, queso, and lime)

Instructions

1. Place the sliced flank steak, sliced bell peppers, sliced sweet onion, and diced jalapeño into the slow cooker. Sprinkle the smoky fajita seasoning evenly over the mixture and pour the fresh lime juice over everything. Ensure all ingredients are well combined by tossing them gently with tongs.
2. Cover the slow cooker with the glass lid and set it to the LOW setting. Cook for six hours. The steak should reach an internal temperature of 145°F (63°C). Once finished, allow the steak to rest for at least 3 minutes before serving to ensure maximum juiciness and tenderness.
3. Warm the flour tortillas over a flame until lightly charred. Use tongs to transfer the steaming steak and pepper mixture onto the prepared tortillas. Top generously with guacamole, sour cream, melted queso, and an extra squeeze of fresh lime juice as desired.

Contains: gluten, milk

Estimated nutrition per serving

Calories

420

Protein

35 g

Carbohydrates

18 g

Fat

22 g

Fiber

3.5 g

Sugar

5 g

Sodium

650 mg

Automatic estimate from the ingredient list, not laboratory-verified.