Slice croissants in half carefully and lay them on a baking sheet, cut side down. Toast in the oven for 5 minutes at 400 degrees.
Remove croissants from oven. Top with sliced avocado and tomato on bottom half of croissant. Sprinkle grated cheese on top half of croissant.
Return to oven for 3-4 minutes.
Add a small dab of butter to a nonstick skillet over medium-high heat. Once melted and bubbling, add scrambled eggs and turn heat down low. Cook eggs, moving cooked eggs to center of skillet for 2-3 minutes until they are softly scrambled but still have some liquid to them. You don’t want them completely dry. Remove from heat and season with a pinch of salt.
Remove croissants from oven. Add half the eggs to each croissant bottom. Top with sprouts and a pinch of salt and pepper. Add cheesy top of croissant and serve immediately!