Frittata with Ham, Broccoli & Potato

Ingredients

• 1 Tbsp vegetable oil
• 1 Tbsp unsalted butter
• ¼ cup onion, finely chopped
• 2 medium potatoes, cooked and diced
• 2 cups steamed broccoli florets, chopped (or use frozen)
• 1 cup diced cooked ham
• 1 cup old cheddar or feta cheese
• 6 large eggs
• ¼ cup cream
• Fresh thyme
• Freshly ground black pepper