Carrot Tacos w/ Carrot Top Chimichurri

Carrot Tacos

4 carrots (Save the green carrot tops for the chimichurri)
1-2 parnsips
1 small yellow onion, diced
1 tablespoon olive oil
2 teaspoons ground cumin
1 teaspoon lime zest
1 teaspoon cayenne pepper
1/2 teaspoon salt
1/2 teaspoon pepper
1 can of black beans
Corn tortillas

Optional garnishes:
Sliced radishes
Lime wedges

Carrot Top Chimichurri

1 large handful of cilantro
Carrot greens (from the 4 carrots)
1 serrano chili, stem and seeds removed
2 cloves of garlic, peeled
Salt & pepper, to taste
The juice of 1 lime
1/4 olive oil