Toast two slices of your preferred whole grain or gluten-free bread until golden and crisp.
Slice the avocado in half and remove the pit. Using a knife, carefully cut the avocado into chunks while still in the skin, then scoop it out into a bowl.
Add the lemon juice to the avocado and mash it with a fork until smooth but still slightly chunky.
Spread the mashed avocado evenly over the toasted bread. Top with crumbled feta cheese and halved cherry tomatoes.
Drizzle the balsamic reduction over the top of the toast. Season with salt, pepper, and red pepper flakes to your liking. Serve immediately and enjoy!
