Ham and Cheese Popovers

Ingredients (8)

• 1 cup all-purpose flour
• 1 1/2 teaspoons kosher salt
• Pinch of sugar
• 2 large eggs, room temp
• 1 tablespoon unsalted butter, melted and cooled (plus some for pan)
• 1 cup milk, room temp
• 3 ounces ham, diced
• 4 ounces cheddar cheese, grated