Ham and Swiss Breakfast Muffins – Fustini's Oils & Vinegars

Ingredients

• 1 tablespoon Fustini's Herbs de Provence olive oil, plus more for greasing
• 1 cup mushrooms, diced
• 1/2 yellow onion, diced
• 2 cups shredded hash browns
• 2 cups small diced smoked ham
• 1 tablespoon Fustini's 12 Year White balsamic
• 6 eggs
• 1/2 cup skim milk (or preference)
• Kosher salt and freshly ground black pepper
• 1 cup shredded Swiss cheese
• 2 tablespoons fresh parsley, chopped, plus more for garnish