In a skillet, combine the corn and cook over medium heat until slightly charred.
In a mixing bowl, blend cream cheese, sour cream, and mayonnaise until smooth.
Stir in the cooked corn and mix well.
Add crumbled feta cheese and stir until well combined.
Mix in chopped cilantro, lime juice, chili powder, salt, and pepper.
Taste and adjust seasoning as needed.
Transfer the dip to a serving bowl.
Garnish with additional corn and chopped green onions if desired.
Serve with tortilla chips on the side.
Enjoy your delicious Mexican Street Corn Dip!