Image credit to: Boston Organics
If you're unsure how to cook broccoli, check out this great article from the kitchn.
1. Place eggs and water in bowl, whisk well. Preheat broiler.
2. In medium ovenproof nonstick skillet heat oil over medium flame. Add onion and cook until it begins to soften, about 5 minutes. Add broccoli and cook another 2 minutes. Season with salt and a few turns of pepper. Pour egg mixture over the vegetables in the skillet covering them evenly. Reduce the heat to medium-low, cover, and let cook until the egg mixture has set around the edges but is somewhat liquid in the middle, about 8 minutes. Sprinkle withcheese.
3. Place skillet under broiler about 2 inches from heat until surface is set and golden brown, 1 to 2 minutes. Be careful not to overcook or the egg mixture will become tough. Remove from broiler. Cut frittata into 8 wedges and serve.