Preheat oven to 375 degrees F. Coat a muffin tin with spray and set aside.
Combine veggies in a large bowl and fill each muffin tin about ⅔ full. Whisk eggs and seasonings in a large mixing bowl and using a ⅓-cup measuring cup, scoop egg mixture and fill each muffin tin to the top.
Bake muffins for 30 minutes, until they’ve risen and are slightly browned. Enjoy!