Camping Breakfast Sandwiches

Bahan-bahan (2 porsi)

• 3 large eggs
• 1/2 cup chopped ham or cooked bacon
• 1 quart-sized zip baggie
• 2 whole English muffins
• 1 tablespoon butter
• 1 small avocado, (peeled and mashed)
• 2 slices American cheese
• salsa, (for serving (optional))