Hearty Baked Meat and Potatoes - Comforting Casserole

Ingredients

• 1 lb (450 g) ground beef (or ground turkey)
• 1 medium onion, diced
• 2 cloves garlic, minced
• 1 teaspoon salt (5 g)
• ½ teaspoon black pepper (2 g)
• 1 teaspoon dried thyme (1 g)
• 1 can (15 oz / 425 g) diced tomatoes, undrained
• 1 cup (240 ml) beef broth
• 4 large russet potatoes, peeled and thinly sliced (about 2 lbs / 900 g)
• ½ cup (120 ml) heavy cream
• 1 cup (100 g) shredded cheddar cheese, divided
• 1 tablespoon olive oil (15 ml)
• Salt & pepper to taste