Place the tostada shells on a baking sheet. Bake for 3-5 minutes until the tostadas are warmed through.
While the tostada shells are reheating, heat the refried beans and shredded chicken in either the microwave or on the stovetop until both are warmed through.
In a large mixing bowl, stir together the shredded chicken, salsa and taco seasoning.
Then prepare the tostadas. Spread a thin layer of the refried beans onto each tostada shells.
Top each one with the shredded chicken mixture, both shredded cheese, lettuce, tomatoes, red onions, avocados, cilantro and a dollop of sour cream.
Serve each one immediately while warm and enjoy!
Notes
You can bake regular corn tortillas until crispy to make your own tostadas if you can't find any at your store.For the shredded chicken, you can use any leftover chicken you have in the refrigerator, store bought shredded rotisserie chicken or make your own shredded chicken in a crock pot. Crock Pot Instructions: If you do not have cooked shredded chicken, you can easily make the chicken in the crock pot. Place raw breasts chicken, salsa and taco seasoning in a crock pot. Cook on low for 6-8 hours (or on high for 3-4 hours) until the chicken is easily shreddable. Shred the chicken and then assemble the tostadas based on the instructions.