Cut the steak into 1 inch slices and then into bite size pieces.
Drizzle the pieces with olive oil and season with Taco seasoning. Mix the flank steak cubes to ensure even coating all around.
To make the pico, cut the tomatoes into wedges, remove the seeds and dice them. Repeat with the onion and jalapeno.
Add the diced veggies into a bowl, add chopped cilantro, salt and freshly squeezed lime juice. Mix the ingredients together and adjust seasoning to your preference.
Preheat the grill to a medium indirect heat. Drop the seasoned steak cubes onto the hot surface and let it sear for 1-2 minutes. Start flipping the meat every 1 -2minutes until the steak is fully cooked. This will take 5-7 minutes.
Start by adding a generous layer of guacamole to the tostada. Next add a large spoonful of grilled steak followed by the homemade pico de gallo. Top everything off by drizzling some Mexican crema or sour cream and cojita cheese. Enjoy!
Notes
Instead of Flank steak, use skirt steak. To avoid too much heat, remove the seeds from the jalapenos.Use store bought fresh guacamole to speed up the prep work.