How long should I marinate the steak?
Marinate the steak pieces for at least 30 minutes in the spice and oil mixture to allow flavors to penetrate, though 1-2 hours will yield deeper taste.
Can I use a different cut of steak?
Yes. Flank steak, skirt steak, or ribeye work well; cut them into uniform bite-sized pieces so they cook evenly.
What can I use instead of fried tortillas?
Baked tortilla chips, crispy wonton wrappers, or store-bought tortilla crisps are quicker alternatives, though fried tortillas offer superior flavor and texture.
How do I keep tostadas crispy?
Assemble tostadas just before serving. If making ahead, store the fried tortillas in an airtight container and warm them in a 350°F oven for 2-3 minutes before topping.
Can I make this dairy-free?
The homemade queso sauce depends on cheese; you could substitute a dairy-free cheese sauce, but the flavor will differ significantly from the original recipe.