Step 1

Marinate the carne asada:

Step 2

In a large bowl, combine the minced garlic, lime juice, orange juice, olive oil, soy sauce, cumin, chili powder, paprika, black pepper, and salt. Stir well. Add the steak to the bowl and toss to coat it with the marinade. Cover and refrigerate for at least 1 hour, or overnight for the best flavor.

Step 3

Cook the carne asada:

Step 4

Preheat a grill or grill pan over medium-high heat. Remove the steak from the marinade and grill for 4-6 minutes per side, depending on your preferred level of doneness. Once cooked, let the steak rest for 5 minutes before slicing it thinly against the grain.

Step 5

Prepare the toppings:

Step 6

While the steak is resting, prepare your toppings. Shred the lettuce, chop the red onion, dice the tomato, and slice the avocado. Set aside the sour cream, salsa, and cheese for serving.

Step 7

Assemble the tostadas:

Step 8

Place the crispy tostada shells on a serving platter. Start by layering the shredded lettuce on the tostada shells, followed by the sliced carne asada.

Step 9

Add the toppings:

Step 10

Top the carne asada with diced tomatoes, chopped onions, and sliced avocado. Sprinkle with cheese, and drizzle with sour cream and salsa. Garnish with fresh cilantro, if desired.

Step 11

Serve and enjoy:

Step 12

Serve the tostadas immediately, with lime wedges on the side for an extra burst of freshness. Enjoy your delicious, flavorful Tostadas de Beef Carne Asada!