01 -
Heat a skillet over medium-high heat with some oil. Sauté diced onions until softened, about 1 minute.
02 -
Add shredded chicken, taco seasoning, and water as per the seasoning packet instructions. Simmer until the water cooks down and the chicken warms through.
03 -
Incorporate the drained Rotel diced tomatoes into the skillet. Stir and simmer until most of the juices evaporate and the mixture thickens.
04 -
Spread refried beans on the bottom of each taco shell. Layer with the chicken mixture and top with shredded cheese.
05 -
Arrange the filled taco shells in a casserole dish or on a baking sheet. Bake at 400°F (200°C) for 5-7 minutes, or until the cheese melts.
06 -
Serve the baked tacos hot with your choice of toppings.