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1
Cover the bottom of a small skillet with the cumin; cook and stir over low heat for 2 minutes or until lightly toasted.
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2
Remove from heat.
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3
For chimichurri, combine the cumin, cilantro, parsley, vinegar, red pepper, and sea salt or coarse salt in a blender container.
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4
Cover and blend on lowest speed, slowly adding the oil.
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5
Combine ground beef, the 1/4 teaspoon salt, and the ground red pepper in a large mixing bowl.
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6
Shape into 12 patties 3-1/2 inches in diameter.
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7
Spoon about 1 tablespoon of the chimichurri mixture in the center of each of 6 of the patties.
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8
Place remaining patties on top and seal edges.
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9
Place burger patties on the lightly oiled rack of the grill directly over medium heat.
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10
Grill for 18 to 22 minutes or until an instant-read thermometer inserted in centers registers 160 degree F, turning once halfway through grilling.
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11
Brush rolls with some of the chimichurri sauce.
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12
Top with burgers, remaining sauce, and tomatoes and onions.
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13
Serve with Grilled Plantains, if desired.
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14
Grilled Plantains: To make the Grilled Plantains, bias-slice peeled plantains into 1/2-inch-thick slices.
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15
Brush with peanut oil.
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16
Grill directly over medium heat for 8 minutes or until centers are just soft, turning once.
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17
Drain on clean paper towels.
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18
Serve warm.