2 1/2tablespoonsMexican spice mix or taco seasoning
1can black beansdrained
3cupsbaby spinach leavesroughly chopped, about 2 cups worth
2cupsshredded cheddar or Mexican blend cheese
Preheat the oven to 350°F and arrange two racks near the center of the oven. Cook and crumble the beef in a large skillet. Sprinkle with spices as it cooks. When the beef finishes cooking, add the black beans and the spinach. Remove from the heat and stir to wilt the spinach.
Spread the tostada shells across two baking sheets, divide the beef mixture onto them, and top with cheese. Place the baking sheets in the oven and bake until the cheese has melted, about 5 minutes. Enjoy!
Corn tortillas or small flour tortillas can also be used in place of the tostada shells. Tortilla chips can also be used to make oven nachos. Simply spread tortilla chips across a baking sheet, top with the beef mixture and then sprinkle with double the amount of cheese.