Heat a pan on medium heat, then add 2 tbsp of olive oil and the rosemary. Fry the rosemary for 1 minute, then add the mushrooms and sauté. Season with a pinch each of salt and pepper. Remove from the pan and set aside (discard the rosemary).
Add another tbsp of olive oil to the pan on medium heat. Add your egg, season with salt and pepper, cover, and cook until desired doneness reached.
Drizzle your toast with a little olive oil. Add the fried egg, followed by a few drops of smoked Tobasco, then the mushrooms, finishing with the chili flake.