Add avocado and cottage cheese to small bowl. Smash avocado and stir to combine.
Smear avocado spread on toast.
For the egg, gently crack egg into a hot pan sprayed with cooking spray. Reduce the heat to medium and allow to cook for about 2 minutes. Cover the pan with a lid for an additional minute to finish, do not flip the egg. Loosen the sides of the fried egg with a spatula, then slide out of pan on top of toast.
Sprinkle top of avocado toast with black pepper, salt, red pepper flakes and a squeeze of lime juice.