Toast the bread.

Scoop the meat of the avocado out of the skin with a fork. Mash it on the toast with the fork.

Pour lime juice as desired on the avocado and mix it in with the fork.

Sprinkle crushed red pepper flakes on top: more for a spicier sandwich.

Fold the whole thing in half or top with another piece of toast.

Enjoy!

You could also cut these into triangles for a unique and healthy appetizer.