Preheat broiler.

Add butter to an oven-proof skillet and place over medium heat. Add ham, broccoli and onion to skillet and cook, stirring often for 4 to 5 minutes.

Meanwhile, add eggs to a bowl and season with salt and pepper and whisk together.

Pour over sautéed ham and vegetables.

Cook until eggs start to set. Sprinkle cheese over the top and place skillet in the oven under broiler for 5 minutes or until set.

Slice and serve immediately or at room temperature.