Heat a skillet over high heat and add the frozen corn.
Cook the corn, stirring occasionally, until it develops a light char (about 3-5 minutes). Remove from heat and set aside.
Slice the avocados in half, remove the pit, and scoop the flesh into a large mixing bowl.
Add salt and black pepper, then use a fork to mash the avocado to your desired consistency—smooth or slightly chunky.
Mix in the charred corn, chopped tomato, and parsley (if using), stirring until evenly combined.
Toast or grill the bread slices to your preferred level of crispiness.
Spread a generous layer of the guacamole onto each slice of bread.
Top with quartered hard-boiled eggs and garnish with parsley or black sesame seeds for extra flavor and visual appeal.
Serve immediately and enjoy your healthy start to the day!