You can get as creative as you desire on your toppings, however I think this was a great balance, and well, they rocked.
Start by combining your ingredients for the carne asada, and rub all over the meat. Place in a sealable bag, and let this marinate over night if you can, but at least 6 hours.
Soak the sliced potatoes in cold water for about 20 minutes, then drain, and place back in cold water again to remove a bunch of the starch. Drain again, then place on a lined baking sheet, and place in a preheated, 300 degree oven for 20 minutes, just to lightly cook them.
Heat your coals, and get that grill piping hot. During this time, take the meat out of the refrigerator, and let it come to room temperature as you are heating the grill. Once the grill is heated, place the meat on the grill, and cook for about 5 minutes per side, or to your desired doneness. Remove and place on a plate to let rest, about 20 minutes prior to slicing.
Heat the oil to about 350 degrees, then carefully add the potatoes, working in batches, and let them cook for about 4-5 minutes. Remove with a slotted spoon and place into a paper lined bowl. Repeat with the remaining (batches) of fries.
Once the first cooking of the fries is completed, bring the oil up to about 375 degrees. Add the fries, working in batches, back into the oil, and cook until golden brown. The result will be a crisp exterior with a nice and tender interior. Remove with the slotted spoon, and place back into a paper towel lined bowl. Season with salt and pepper. Repeat with remaining fries.
Slice the carne asada across the grain in thin slices, then chop into bite-sized chunks. Add the carne asada to the bowl of fries, along with the serrano chilies, green onions, and cheeses. Give a good toss, then place in a 300 degree oven in a baking dish, and cook until the cheese just begins to melt.
Remove, and top with the tomatoes, avocado, cilantro, and sour cream.
The end result is nothing short of amazing. The fries were perfect and when paired with the carne asada, and dipped into the sour cream or avocados, man, I’m just hungry thinking about them! Give these a shot. They are perfect game day grub, and will feed about 4, or two very hungry people. Enjoy!