Step 1

Preheat the oven to 400 degrees F (200 degrees C). Line a baking sheet with parchment paper or foil.

Step 2

Place the potato on the baking sheet, and using a fork, repeatedly pierce the top of the sweet potato to keep it from exploding in the oven.

Step 3

Bake in the preheated oven until sweet potato is fork-tender and cooked through, 45 to 50 minutes. Set aside to cool.

Step 4

Cut sweet potato in half once cool enough to handle, scoop out the flesh, and place in a food processor or blender. Add cilantro, lime juice, tahini, garlic, cumin, salt, and red pepper flakes. Blend until well combined and smooth. Taste, and adjust seasoning if necessary.

Step 5

Spoon dip into a bowl, garnish with chopped pistachios, and serve.