1 - Step 1 Preheat oven to 450°.

2 - Bring a large pot of water to a boil.

3 - Trim ends of yuca and cut each one in half, widthwise.

4 - Stand them on their ends and use a sharp knife to cut the waxy peel off.

5 - Cut each piece in half lengthwise and then cut in half lengthwise one more time to create 16 pieces total.

6 - Trim the fibrous center out of each piece.

7 - Step 2 Place cut yuca into boiling water and let boil until fork tender, 8 to 10 minutes.

8 - Using a slotted spoon, remove from pot and place on a paper towel lined cutting board.

9 - Pat dry with another paper towel.

10 - Step 3 Place dried yuca into a large bowl and toss with oil.

11 - Season with chili powder, salt, and pepper and toss again to evenly coat.

12 - Place yuca on a large baking sheet in an even layer.

13 - Step 4 Bake until golden and crispy, about 25 minutes, tossing halfway through.

14 - Step 5 Meanwhile make dipping sauce: In a small food processor or blender, combine avocado, sour cream, lime juice, and cilantro and blend until smooth.

15 - Season with salt and pepper.

16 - Step 6 Serve fries immediately with dipping sauce.