Preheat oven to 425°.
In a large bowl add cubed sweet potatoes and all ingredients listed for sweet potatoes. Mix everything until well combined.
Line a large baking sheet with parchment paper or spray. Bake in oven for 30-35 minutes. Potatoes are tender and soft when done.
In meantime, make your crema sauce by adding all ingredients for crema sauce in food blender, or blender. Blend well until smooth.
I warmed my corn tortillas up on a baking sheet in the oven on the bottom rack the last 5 minutes of the potatoes cooking time.
Assemble your tacos by adding some sweet potatoes to tortillas, drizzling some crema sauce over potatoes and sprinkling some fresh cilantro on top!
I also added my leftover limes from the lime juice for garnish!