Cheeseburger Fry Casserole Yum - cookrisp

Ingredients

• 4 cups frozen fries
• ½ cup shredded mozzarella (optional)
• 1 medium onion, finely chopped
• 1 tsp salt
• 1 tbsp olive oil for sautéing
• 2 cups grated cheddar
• 1 cup ketchup
• ½ cup diced pickles, optional topping
• ¼ cup milk
• 2 minced garlic cloves
• 1 tbsp yellow mustard
• ½ tsp ground black pepper
• 1 lb beef, ground