Pastel de Papas (Beef Shepherd's Pie)

Ingredients (17)

• ✓ 2 ½ pounds Yukon Gold potatoes, peeled and quartered
• + 1 ½ teaspoons salt, divided add to pantry
• + ¾ cup milk, or as needed add to pantry
• + 3 tablespoons butter add to pantry
• + 1 tablespoon Parmesan cheese add to pantry
• ✓ ¼ teaspoon ground black pepper
• + ¼ teaspoon ground nutmeg add to pantry
• + 1 tablespoon olive oil add to pantry
• + 1 onion, chopped add to pantry
• + 1 red bell pepper, chopped add to pantry
• + 1 ½ pounds ground beef add to pantry
• + 2 teaspoons smoked paprika add to pantry
• + 1 teaspoon garlic powder add to pantry
• + 2 hard-cooked eggs, chopped add to pantry
• + ½ cup chopped green olives add to pantry
• + ½ cup cubed mozzarella cheese add to pantry
• + 1 tablespoon grated Parmesan cheese add to pantry