Try to purchase a large, long sweet potato from the bin. The number of slices could vary, but the guacamole topping should not have to be adjusted.
Want more toppings? Try a little sour cream or fresh cilantro.
To dice the avocado, cut it in half lengthwise, top to bottom, by scoring all the way around down to the pit. Open the avocado by twisting each half in opposite directions and remove the pit. Using a large spoon, scoop the flesh from the skin. Place one avocado half cut-side down on a cutting board. Make two horizontal cuts to make three planks, then cut the planks lengthwise into strips. Turn 90 degrees, and cut again. Repeat with the other avocado half.