Table of Contents
Introduction
The crockpot flank steak fajitas are the perfect meal if only you desire a savory, fulfilling, and simple meal to prepare at home without taking much of your time. Easy to prepared and great for entertaining, here’s the simple recipe of flank steak with bell peppers and onions: Whether you’re catering for a party or simply in search of a quick and easy meal for a working weeknight this recipe is ideal for anybody who enjoys Mexican food.

I think the beauty of this recipe relies in its simplicity. The slow cooker does all the work; the ingredients gradually cook together, soaking up all the flavours, juices and seasonings to make a tasty fajita filling. It has relatively low preparation time and in case you are too busy, you prepare it in advance then bam in a few minutes, you have a delicious meal ready.
Follow the instructions below to understand how to prepare this tasty crockpot flank steak fajitas; the ingredients involved, the preparation process, and potential advice. I will also bring some slight differences as well as a few ideas about how to adapt this recipe to your preferences.
Ingredients for Slow Cooker Flank Steak Fajitas
For making crockpot flank steak fajitas it is not necessary to incorporate many ingredients and here are those essential items. Here’s what you’ll need:
- Flank Steak
- Bell Peppers
- Onions
- Fajita Seasoning
- Lime Juice
- Optional Toppings
1. Flank Steak
Although the basic piece of meat for slow cooking should contain a relatively low fat, flank steak is perfect for slow cooking and is also rather tender. When prepared, the muscle fibers in the flank steak depart and cause the steak to be juicy as well as capable of being shredded. You can also use skirt steak for the same But flank steak is more preferable as on slow cooking it gets tougher and is better pulled apart after it is cooked.
2. Bell Peppers
Green, yellow, orange and red bell peppers enhance the colour of the fajitas, sweetness and texture. The bell peppers become tender when cooked and I found that they also have married the flavors of the steak and spices. You can also use a combination of colors on the rice, this will make the dish colourful!

3. Onions
Onions are a must in fajitas. The raw natural sugars gives them a delicious sweetness while the saltiness adds to the tenderness of the steak. Usually, yellow or white onions are utilized in making fajitas; however, for a little more spicy arrangement of the onions, people can try using red onions.
4. Fajita Seasoning
The vital part of fajita seasoning is in this dish. You can use a bought seasoning mix, but if you want, you can prepare your own by including chili powder, cumin, garlic and onion powder, paprika, and if you want it a little spicy some cayenne pepper. Making your own seasoning means you are free to choose what should be put in it and where you can keep away from preservatives plus high sodium content.
5. Lime Juice
An investigative analysis reveals that a squeeze of lime juice serves to enhance the taste of the steak because the lime has a slightly sour taste. It also helps put some amount of pressure on the meat during the process of cooking it.
6. Optional Toppings
Yet, toppings are really helpful if you want to enhance the flavor of the flank steak fajitas even further. For toppings, the most common ones are cheese, avocado, sour cream, chili, salsa, and we recently added coriander as well as hot sauce if you fancy it hot.
How to Make Crockpot Flank Steak Fajitas: Step-by-Step
So having all these, let me take you through some steps on how to prepare this tasty slow cooker recipe.
Step 1: Prep the Flank Steak
First of all, it will be useful to marinate the flank steak before placing it in the slow cooker,. massage the fajita seasoning mix, top to bottom, on the steak. If you are using, perhaps, bought seasoning from the supermarket remember to adjust to the measurements indicated in the pack. When using homemade seasonings, use 1 – 2 tablespoons for a recipe.
Step 2: Sear the Steak (Optional)
In a way, the preparation of the flank steak isn’t a necessity but it has been known to improve the taste once seared before slow cooking. Searing forms a brown outer layer on the meat making it more flavorful on the end product. To sear the steak, place one tablespoon of olive oil in the skillet and put it over medium flame. Put the steak into a pan for 2 – 3 minutes on each side or until they are browned on the outermost surface. After that, transfer the steak from the pan and place it aside.
Another step is searing and although this is not mandatory it will give the meal a whole new flavor though.
Step 3: Prepare the Vegetables
Dice them thinly or better still, cut your bell peppers and onions into strips. If the lasagna slices are sliced thin – the lasagna will cook and soften fast in the slow cooker. This step is very simple but brings a lot of seasoning into the dish.
Step 4: Layer the Ingredients in the Crockpot
Pour the seasoned flank steak onto the bottom of the slow cooker. Now put the sliced bell peppers and the onions on the grill over the steak to brown. Cut the vegetables and meat and place them on the grill and then Squeeze the juice of one lime to the top of the vegetables and the meat. It also adds seasoning and seeing that steaks is not flipped, it would also aid in softening the steak as it cooks.

Step 5: Cook on Low
Place the cover on the crockpot and put the heat setting to low, let the steak to cook for about 6-8 hours or until it becomes tender, and can be shredded easily. Due to long periods between each turn, the meat should imbibe all the flavors from the fajita seasoning and vegetables used to make the filling juicy.
If you decide to cook it fast, you can always set it on high for 3- 4 hours; however, low heat will give you the most juicy and tasty meat.
Step 6: Shred the Steak
When the soup is prepared, pull the steak out of the crockpot and using two forks, pull it apart into small chunks. The meat should be so soft that it can just crumble into pieces when a fork is run on it. Put the shredded steak back into the crockpot and combine the meat with the vegetables and the sauce.
Step 7: Serve
Now comes the fun part: assembling the fajitas! Bake some flour tortillas (or corn tortillas if you prefer) and then pack them with the shredded beef and vegetable filling. But, you can also add fresh cilantro, shredded cheese, sour cream, guacamole, and salsa.
The fajitas also go well with a side of Mexican rice, beans, or a nice simple salad, for a full meal.
Tips and Variations
While this recipe is delicious on its own, here are a few ways you can customize it to suit your preferences:
1. Make it Spicy
For a spicier fajitas, try using diced jalapeños on your fajita or one teaspoon cayenne pepper to the fajita seasoning. Hausser suggested that you pour some hot sauce over the fajitas after assembling everything on a single plate.
2. Add More Veggies
For extra taste and nutrients, you may also include some of the other vegetables such as Zucchinis, Mushrooms or even tomatoes. These will deter amateur chefs but add moisture and richness in taste to the dish.
3. Use Chicken Instead of Beef
If you prefer chicken over beef you could easily replace the flank steak used here with boneless skinless chicken breasts or thighs. It will take slightly less time to cook so please watch the meat very carefully to avoid getting it over cooked.
4. Use a Combo of Peppers
You can use different colors of peppers for the bell peppers needed in preparing a colorful and tastier fajita filling. You may also include poblano peppers for the richer smokiness.
5. Leftover Ideas
Lucky for you, what’s leftover from these crockpot flank steak fajitas can be used to fill wraps, tacos, salads, or even fajita bowls with rice. Strangely, the taste becomes better after a day or two making it advisable to prepare large quantities at once and store for future use.

Conclusion
Flank steak fajitas made in the Crockpot are tasty and perfect for preparing for everyone when desire to have a meal with your family. You don’t need to die for these tasty, tender meat, and beautiful meat SLOW COOKING makes it easy to have healthy meals ready in less than 30 minutes. Whether you’re cooking for guests, or searching for something easy to serve for dinner this recipe tops it regarding taste and ease.
Be sure to give this crockpot recipe a shot the next time you are in the mood for Mexican eatin’. It is virtually impossible not to find toppings that you love and the cooking method just cannot fail so it gives us one more easy dinner option.