Wash and slice tomatoes. Set aside. Heat vegetable oil in a large frying pan over medium heat. Add vegetarian burger patties and fry from each sides for approx. 2 – 3 min. Remove from heat and set aside.
Finely dice some jalapeños slices and grate cheddar. Add grated cheddar and corn starch to a small saucepan and stir to combine. Add evaporated milk and hot sauce. Heat up while stirring until cheese is melted. Fold in diced jalapeños, then take from heat.
Halve burger buns horizontally and spread chili sauce on each half. Place lettuce, burger patties, cheese sauce, tortilla chips, tomato slices and remaining jalapenos slices on top of each burger. Cover with other halves of burger bun. Enjoy!