Ultimate Baked Beef Loaded Potato Casserole Delight

Ingredients

• 1 lb (450 g) ground beef (preferably 80% lean)
• 1 small onion, diced (approx. 1 cup)
• 2 cloves garlic, minced
• 1 cup (240 ml) beef broth
• 1 tablespoon Worcestershire sauce
• 1 teaspoon dried oregano
• Salt and pepper to taste
• 3 large russet potatoes, peeled and cubed (approx. 1.5 lbs or 680 g)
• 1/2 cup (120 ml) heavy cream
• 1/4 cup (60 g) unsalted butter
• 1 teaspoon garlic powder
• 2 cups (200 g) shredded cheddar cheese
• 1/2 cup (120 ml) sour cream
• 3 green onions, sliced (optional, for garnish)