Prep. Preheat oven to 425 F.
In a small bowl mix ranch seasoning packet with sour cream. Keep in the fridge.
Buffalo Chicken. Mix the chicken strips in buffalo sauce and transfer to a heated with a drizzle of vegetable oil medium skillet.
Cook on high for 2-3 minutes on each side. Reduce the heat and add water. Stir to coat. Simmer for 2-3 minutes and remove from heat. Season with salt if necessary.
Baked Tostadas. Place tostadas on a baking tray, spray generously on both sides with vegetable oil.
Bake in a preheated oven for 3 minutes and flip them over, bake for another 2-3 minutes or until crispy and golden. Do not leave the oven, these tostadas will burn in a blink of an eye!
Tostada assembly. When tostadas are baked, add a layer of chicken in buffalo sauce on each tostada.
A generous amount of cheese and pop right back in the oven until cheese is melted. Top with lettuce, avocados, tomatoes, drizzle with ranch dressing, and other favorite toppings of choice.