Big Mac Casserole

Name: Big Mac Casserole
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: American
Ingredients: 2 teaspoons Olive Oil; 1 Pound Southern Style Hash Browns; 2 Pounds Ground Beef; 1/2 Each White Onion (chopped); 2 teaspoons Yellow Mustard; 1/2 teaspoon Garlic Powder; 1/2 teaspoon Onion Powder; 1 Cup Grated Cheddar Cheese; Salt and Pepper to taste; 1/4 Cup Mayonnaise; 1/4 Cup Ketchup; 1/4 Cup Dill Pickles (diced fine); 1 Tablespoon Dill Pickle Juice; 1 Each Roma Tomato (chopped); 1/4 Cup White Onions (chopped); 12 Each Dill Pickle Slices; 1 Cup Shredded Lettuce