Country Morning Casserole

Ingredients

• 4 tablespoons butter, divided
• 1 tablespoon olive oil
• 2 cups baked potatoes, cubed, or 2 cups shredded hashbrowns
• 1 cup ham, cubed
• 1/2 cup bacon, crumbled
• 6 mini sweet peppers, sliced
• 1 jalapeño, diced
• 1/2 cup onion, diced
• 2 cups fresh mushrooms, sliced
• 1/2 teaspoon onion powder
• 1/2 teaspoon garlic salt
• 1/2 teaspoon coarse ground black pepper
• 3 tablespoons chives, diced, divided
• 1 cup cheddar cheese, grated
• 8 large eggs
• 2 tablespoons water
• salt, to taste
• pepper, to taste
• 1/2 ripe avocado, sliced