Mashed Potatoes: Grandma might have mixed leftover mashed potatoes into the meat mixture to add moisture and texture, creating a softer, more flavorful meatloaf.
Hard-Boiled Egg: Adding sliced or chopped hard-boiled eggs into the center of the meatloaf gives it a delightful surprise when sliced, adding richness and protein to each bite.
Barbecue Sauce: Grandma might have used barbecue sauce as a flavor enhancer, either mixing it into the meat mixture or brushing it on top for a sweet and tangy glaze.
Mushrooms: Finely chopped mushrooms sautéed with onions and garlic can add depth of flavor and moisture to the meatloaf, as well as an earthy richness that complements the beef.
Tzatziki Sauce: Incorporating tzatziki sauce into the meat mixture or serving it as a topping can add a refreshing Mediterranean twist, with its creamy texture and tangy flavor from yogurt, cucumber, and herbs.
Vegetables: Grandma might have finely grated or minced vegetables such as carrots, zucchini, or bell peppers into the meat mixture, not only adding nutritional value but also moisture and texture.
These secret ingredients, combined with Grandma's love and culinary creativity, surely made her meatloaf a cherished family favorite.