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1
Preheat the grill to high.
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2
In a large bowl, mix the ground beef with the salt and pepper and set aside.
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3
Next, brush the green chiles with oil and place them on the hottest part of the grill.
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4
Cook the chiles until they are charred on all sides about 5 minutes.
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5
Then remove them from the grill and put them in a bowl of ice water to cool.
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6
Remove the chiles from the ice water and carefully peel off the charred skin.
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7
Cut the stem off, remove the seeds and set aside.
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8
Take the onions and place them on the grill.
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9
Cook the onions until charred on all sides about 10 minutes and set aside.
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10
In a blender, add half the peeled chiles and half of the charred onions.
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11
Then add in the garlic, epazote, and oregano.
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12
Blend until the ingredients come together.
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13
Add the grapeseed oil and water and continue blending until the mixture is smooth about 30 seconds.
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14
Remove mixture to a large bowl.
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15
Roughly chop the remaining chiles and onions and mix them into the chile puree.
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16
Season, to taste.
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17
Form the ground beef into 4 (8-ounce) patties.
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18
Brush the grill with oil and cook the patties to desired doneness, 5 minutes for medium rare, 15 minutes for well done.
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19
Put the hamburger buns on the grill until lightly toasted.
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20
Just before removing the burgers, top them with the cheese and chile mixture.
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21
Remove the patties from the grill once the cheese begins to melt and place them on the hamburger buns.
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22
Garnish with your favorite toppings and enjoy!
