Cheesy Ham and Broccoli Frittata

Bahan-bahan (6 porsi)

• 1 teaspoon olive oil
• 1 small onion (or half a large onion, chopped)
• 1 crown fresh broccoli (florets separated)
• 1 & 1/2 cups cooked ham (chopped (I used a ham steak))
• 6 ounces cheddar cheese (cut into chunks)
• 9 eggs
• 1/2 cup whole milk
• 3/4 teaspoon salt
• 1/4 teaspoon cayenne pepper
• 1/8 pepper (or to taste)