Slow-Cooker Cheesy Philly-Tex-Mex Steak & Jalapeño Fajitas Tips, FAQ & printable recipe

Tips for success

For the best texture, slice the ribeye against the grain. This shortens the muscle fibers, making the meat more tender, especially after a long cook. If you have time, chill the steak in the freezer for 15 minutes before slicing—this makes it easier to cut into thin, even strips.

To warm tortillas, wrap them in a damp paper towel and microwave in 30-second bursts until hot and flexible.

Alternatively, heat them in a dry cast-iron skillet over medium heat for 15 seconds per side. Keep them covered in a clean kitchen towel to stay warm while you assemble the fajitas.

Variations

• Chicken Fajitas: Substitute 2 pounds of boneless, skinless chicken thighs for the ribeye. Cook on low for 4 hours, then shred the chicken with two forks. The queso sauce pairs beautifully with the juicy chicken.
• Spicy Habanero Version: Add 1 finely chopped habanero pepper along with the jalapeños for an extra kick. Remove the seeds and membranes for a milder heat, or leave them in for a fiery punch.
• Veggie Fajitas: Replace the steak with 2 pounds of portobello mushroom caps, sliced thickly. Cook on low for 2 hours, then proceed with the recipe. The mushrooms absorb the queso sauce and provide a hearty texture.
• Low-Carb Option: Serve the fajita mixture over a bed of lettuce or cauliflower rice instead of tortillas. The cheesy steak and peppers are satisfying on their own, and the toppings add freshness.

Storage and make-ahead

Fridge

Store leftover filling in an airtight container in the refrigerator for up to 4 days.

Freezer

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

Reheat

Reheat in a skillet over medium heat, stirring occasionally, until hot and bubbly. Add a splash of water or milk if the sauce is too thick.

Store leftover fajita filling in an airtight container in the refrigerator for up to 4 days. Keep the tortillas and toppings separate.

To reheat, warm the filling in a skillet over medium heat or in the microwave, adding a splash of water or milk if the sauce has thickened. Warm the tortillas before serving.

The steak, peppers, and onions can be sliced and stored in the refrigerator up to 24 hours ahead. Combine all ingredients in the slow cooker insert the night before, cover, and refrigerate.

In the morning, place the insert in the slow cooker and cook on low as directed. The cooking time may increase by 30 minutes if starting from cold.

Serving ideas

Serve the fajitas immediately after assembling, while the tortillas are warm and the cheese sauce is still flowing. Offer extra crema, avocado, and lime wedges at the table so everyone can customize their fajitas. A side of Mexican rice or black beans would round out the meal nicely.

For a more casual presentation, set up a fajita bar with the warm tortillas, the cheesy steak mixture, and all the toppings in separate bowls.

Let guests build their own fajitas. This is a great option for feeding a crowd or for a family-friendly dinner where everyone can choose their own toppings.

Frequently asked questions

Recipe card

Slow-Cooker Cheesy Philly-Tex-Mex Steak & Jalapeño Fajitas

Prep 15 minCook 4 hTotal 4 h 15 minServes 6

Ingredients

• 2 lb ribeye steak, thinly sliced
• 2 green bell peppers, sliced
• 2 jalapeños, sliced
• 1 large onion, diced
• 2 tbsp fajita seasoning
• 16 oz white queso
• 1 cup shredded Monterey Jack cheese
• 12 warm flour tortillas
• 1 avocado, sliced
• 1/2 cup crema
• 1/4 cup chopped cilantro
• 1 lime, cut into wedges

Instructions

1. Place the sliced ribeye steak in an even layer at the bottom of a 6-quart slow cooker. Scatter the sliced green bell peppers, sliced jalapeños, and diced onion over the top. Sprinkle the fajita seasoning evenly over the vegetables and meat.
2. Pour the white queso evenly over the meat and vegetables. Use a spatula to spread it gently, ensuring the top is mostly covered. The queso will melt and create a rich sauce as it cooks.
3. Cover the slow cooker with the lid and cook on LOW for 4 hours, until the ribeye is tender and the cheese sauce is bubbling. Avoid lifting the lid during cooking to keep the heat steady. Let it rest for 3 minutes before slicing.
4. Once the steak is cooked through and tender, sprinkle the shredded Monterey Jack cheese over the top. Stir gently to incorporate it into the sauce. The cheese will melt quickly, creating a creamy, stretchy texture.
5. Wrap the flour tortillas in a damp paper towel and microwave for 30 seconds, or heat them in a dry skillet over medium heat until warm and pliable. Keep them covered in a clean kitchen towel until serving.
6. Load the warm tortillas with the cheesy steak fajita mixture. Top with sliced avocado, a drizzle of crema, and a sprinkle of chopped cilantro. Serve with lime wedges on the side for squeezing over the top.

Contains: gluten, milk

Estimated nutrition per serving

Calories

640

Protein

42 g

Carbohydrates

34 g

Fat

38 g

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