Peel the yuca root. Cut into fry shapes, about 1/2 inch thick and 2-2.5 inches long.
Boil yuca fries in salted water for 8-10 minutes until tender. Drain and pat VERY dry.
Preheat oven to 400°F (204°C). Line a baking sheet with parchment paper.
Toss yuca fries with avocado oil, baking powder, garlic powder, salt, and pepper in a large bowl.
Arrange fries in a single layer on the baking sheet. Bake for 25-30 minutes, flipping halfway, until golden and crispy.
Make the crema: Blend sour cream, mayo, cilantro, lime juice, and seasonings until smooth.
Serve the crispy yuca fries immediately with the cilantro lime crema for dipping.