To make burrito bowls: In medium skillet over medium heat, add avocado oil. Saute pierogies in batches, approximately 8 minutes on both sides, until golden brown. Remove from heat and set aside.
Divide pierogies, cherry tomatoes, corn, avocado, pickled red onions and Cotija cheese evenly among serving bowls. Garnish with cilantro.
To make avocado mayo crema: In food processor, process mayo, avocado and lime juice until smooth.
Drizzle avocado mayo crema over bowls, as desired.