Mix the Meatball Ingredients: In a large bowl, combine the minced meat, chopped onion, crushed garlic, grated potato, egg, breadcrumbs, salt, and pepper. Mix well until everything is thoroughly blended.
Shape the Meatballs: With wet hands, shape the mixture into round meatballs. Place them on a chopping board while preparing the vegetables.
Prepare the Vegetable Bed: In a baking dish, layer the diced potatoes, sliced mushrooms, and diced carrots.
Arrange the Meatballs: Carefully place the formed meatballs on top of the vegetable layer.
Add More Veggies: Scatter chopped red bell peppers, parsley, and diced tomatoes over everything in the dish.
Drizzle with Olive Oil: Pour the olive oil over the mixture, ensuring a good coating for flavor.
Make the Sauce: In a separate bowl, mix the tomato sauce with water, salt, and pepper to taste.
Pour the Sauce: Evenly pour the sauce over the ingredients in the baking dish.
Bake It!: Bake in the oven at 360°F (180°C) for approximately 45-50 minutes, rotating the pan halfway through for even cooking.
Serve and Enjoy: Once done, remove from the oven, and serve hot. Enjoy your homemade Baked Meatballs on a Bed of Vegetables!