Broccoli Pasticcio

Filling:
2-3 cups broccoli florets
4 tbsp butter
4 eggs
salt (to taste)
½ cup grated reggiano parmesan (more or less; according to taste)
diced red bell pepper (optional; for color & sweetness)
Variations: green beans & sweet onion; oysters & spinach; asparagus & red bell pepper; mix and match your favorite flavors.
Crust:
¼ cup bread crumbs (homemade with good bread = better [...]