Preheat oven to a low broil. Butter a baking sheet and then place as many tortillas as will fit on the sheet (about 6). Butter the tops of the tortillas then broil for around 3-5 minutes on each side. Make sure that they don't get too brown.
Once they are crispy then take them out and let them cool a bit before topping. Spread on the Hiland Dairy Southwestern Ranch Dip on the tostadas first. Then add the rest of the toppings how you like. Enjoy!