Turn oven to broil. Evenly spray foil-lined baking sheet with cooking spray.
Pour corn kernels onto sheet and spread evenly into one layer. Spray evenly with cooking spray.
Broil corn for about 5 minutes or until kernels start to turn a light brown, turning once. Remove from oven and set aside to cool.
Mash avocados in a medium bowl, keeping some chunks if you want.
Combine tomatillos, garlic, and onion in a blender and blend until well combined and tomatillos are broken down.
Add tomatillo mixture to avocados and stir in roasted corn, cilantro, salt, pepper, lime juice, salsa, and hot sauce. Add more salsa and hot sauce if you'd like to increase the heat.
Recipe by Simple, Sweet & Savory at https://www.simplesweetsavory.com/roasted-corn-and-tomatillo-guacamole/