Although the name may not sound entirely appetizing, the beef flap or flap steak is a thin cut of meat that comes from the bottom sirloin butt cut, and it’s delicious when properly cooked. It’s not a skirt steak or a hanger steak, though they are similar.
I bought a beef flap from my friends at Simmons Organic Farm in Middletown, RI , and didn’t really know what I’d do with the cut until I started searching through my fridge for available ingredients. There were 2 beef flaps in the package I bought, one larger, one smaller, so I put the smaller one in a Ziploc bag with an olive oil/balsamic/garlic/onion/salt/pepper marinade, and left it to chill overnight in the fridge (what I did with it is in the next blog) while I worked on the larger, 2-lb. flap.
Though long and flat, if you have a sharp knife and you work carefully, you can slice the beef lengthwise and, stopping just before you cut it into 2 separate pieces, create a nicely butterflied piece of meat. Smear some tasty ingredients on the meat, then roll it up tightly and cook it.
2-lb. beef flap (I like grass-fed)
1/2 sweet onion, chopped (I like Vidalias)
1 clove garlic, minced
3 strips bacon, finely chopped
4 oz. container of organic spinach and kale (or whatever greens you like)
salt and pepper
8 oz. halloum-style cheese, sliced thin (provolone works, too)
Take a little of the bacon fat rendered when cooking the bacon strips, and heat it in a saute pan. Add the onions and sauté until translucent. Add the garlic, and sauté for a minute. Add the chopped bacon and stir. Add the spinach and kale, and let it wilt and cook down entirely until it’s soft. Season with salt and pepper. Remove the pan from the heat and let it cool.
Butterfly the beef flap, as described above. Take the cooled mixture from the pan and smear it all along there top of the beef evenly. Add the slices of cheese on top.
Tightly roll the beef into a log shape, carefully keeping the inside ingredients from squeezing out.
I pinned the log together with toothpicks my first time around, and it did okay. But I suggest tying the roll with butchers twine in several places so that the meat stays together and cooks more evenly.
Place the log in the fridge, removing it about an hour before cooking to bring it back to room temperature.
Rub the outside of the log with olive oil and season with salt and pepper. Place the log in a hot oven-proof pan and sear on all sides. Then place the pan in a pre-heated 350 degree oven and cook until the interior temperature of the meat is around 120, about 30 minutes.
A temperature of 140 is considered to be medium-rare for beef, but I like to cook it only to 120 and then let it rest, covered with a tent of foil. It will still rise in temperature for a few minutes before it starts to cool down.
Slice carefully with a sharp knife.
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