Heat a large skillet over medium heat, add oil and cook onion for about 3 minutes, stirring occasionally.
Then, add garlic and let cook for about 1 minute, stirring every now and then. Do not let brown!
Season ground beef with salt and pepper and cook for for 3 minutes.
Add tomato paste and let cook additional 3-4 minutes, stirring occasionally. Stir in lime juice!
To arrange the dish, place corn tostadas on a plate, and spread 2 tablespoons of warm Ricos Gourmet Nacho Cheese Sauce on top of each of the 4 tostadas.
Next, spoon about 1/4-1/3 cup cooked ground beef on top of each tostada.
Add about 2 tablespoons of pico de gallo and 1/4 cup chopped red cabbage on top, as well as a few slices of avocado and chopped cilantro. Serve immediately!
If desired, additionally serve with sour cream or lime wedges, and your favorite drink.