Hearty Halibut Chowder

Ingredients

• 1 tbsp of unsalted butter
• 1 finely diced large onion
• 2 peeled and cubed large potatoes
• 2 minced cloves of garlic
• 6 cups of chicken stock
• 1 can (8 oz) of diced stewed tomatoes
• 2 shredded large carrots
• 1 ½ cups of milk
• ½ cup of heavy cream
• Salt
• pepper
• 2 pounds of halibut, cut into 1-inch cubes
• ½ cup of shredded Cheddar cheese
• A pinch of red pepper flakes, or to taste