Put all of your ingredients for chicken into a large pot. That would be the chicken, cumin, kosher salt, half an onion, garlic, tomato slices, and black pepper. Cover your ingredients with water and ensure the chicken has an inch of water over it.
Simmer on a low heat for about 20 minutes, and then bring to a boil on medium heat. Once the water is boiling, you should lower the heat and simmer for an additional 20 minutes to cook the chicken thoroughly. You may need to stir from time to time.
Next, shred your chicken and place it on a cutting board. Set the chicken aside and put the flautas together.
Preheat the oven to 200 degrees Fahrenheit. Line a baking sheet with paper towels and make sure there are enough baking sheets for all of your flautas. This is not a baked flautas recipe chicken dish, but you will use the oven to keep your flautas warm while your entire meal is frying. This will yield better results than trying to warm everything in the microwave, and it ensure that none of the food is served cold.
Next, pop the tortillas in the microwave for about 15 seconds. This makes them warm and pliable so they will be easy to work with. You can warm them in a stack in the microwave, if you like, covering the stack with a damp towel. Trying to warm them up in the oven will make them crispy and hard, which is not what you want.
Then it is time to fill the tortillas. You can put about a tablespoon of shredded chicken in each one. Wrap the tortillas tightly and stick a toothpick through each one. This keeps them from falling apart and opening up while they are frying.
Once all of your tortillas are prepped, you can hear the oil in a skillet and fry your flautas. You want enough oil in the skillet for the oil to be about two inches high. Flip the tortillas over during frying to ensure that they are browned on all sides. Once they are a crispy golden color, you can take them out and place then onto the baking pan in the oven.
Once they are all cooked, you can top the tortillas with cream, avocado slices, and shredded lettuce. Delicious!