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1
Trim the flank steak of excess fat and score the surface lightly.
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2
Combine parsley, cilantro, oregano, oils, vinegar, garlic and cumin in a food processor.
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3
Pulse until smooth.
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4
Place the steak in a large zip-top bag; add the marinade.
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5
Allow to marinate for 2 hours or overnight in the refrigerator.
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6
Preheat a grill or grill pan to medium-high heat.
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7
Lightly oil the grill grates.
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8
Place the steak on the grill and cook to medium-rare.
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9
This should take about 3 or 4 minutes per side.
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10
Use your finger to tell when the meat is ready.
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11
When you poke the center of the steak, it should be ever so slightly squishy and have a bit of give without being firm at all.
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12
If you are uncomfortable with the touch test, you can always use a meat thermometer.
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13
It should register around 130 degrees to 135 degrees F in the thickest part of the meat.
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14
Once the meat is cooked to medium-rare, remove it to a resting rack or a plate for about 10 minutes to allow the juices to redistribute before handling.
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15
Meanwhile, place a large skillet over medium heat.
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16
Add the grapeseed oil; heat through.
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17
Add the bell pepper, onion and jalapeno; cook till the onion is soft and golden brown (this should take a while).
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18
Then add the garlic, cumin and chili powder; cook till fragrant, about 30 seconds.
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19
Remove this mixture from the skillet to a bowl; and set aside.
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20
Wipe out the skillet.
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21
Cut the rested meat into bite-sized pieces; set aside.
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22
To assemble the quesadillas, evenly spread 1/2 cup of shredded cheese on half of each tortilla.
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23
Then cover the cheese evenly with meat, pepper and onion mixture and cilantro.
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24
Fold the other half of the tortilla over, folding tortilla in half, to cover the fillings.
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25
Lightly brush one side of each tortilla with grapeseed oil.
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26
Heat the same skillet used to cook the peppers and onions over medium-high.
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27
Working in two batches, place two quesadillas in the hot skillet, oiled side down.
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28
Let cook till golden brown, about 2 minutes.
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29
Lightly brush tortillas with grapeseed oil before flipping.
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30
Cook another 2 minutes, or until golden brown.
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31
Repeat with remaining quesadillas.