1. Adjust oven rack to middle position and preheat to 450°F.
2. Cut each avocado in half and remove the pit. Using a spoon, scrape out the center of each halved avocado so that it is large enough to accommodate an egg (about 1 1/2 tablespoons). Squeeze lime juice over the avocados and season with salt and pepper, then place on baking sheet. Break an egg into the center of each avocado. Don’t worry if some of the white spills out as long as the yolk is intact.
3. Bake in the oven until whites are set and yolk is runny, about 10 to 12 minutes. Remove from oven and garnish with cilantro, green onion, and jalapenos.