Vegetarian Moussaka

Name: Vegetarian Moussaka
Ingredients: 2 (8 oz. packages) portabella mushrooms, diced; 5-6 russet potatoes, medium-sized; 1 carrot, cleaned and sliced crosswise; 2 onions, medium-sized, diced; 4 cloves of garlic, minced; 4 fresh tomatoes, diced; 1/2 teaspoon dried basil; 1/4 teaspoon garlic salt; 2 tablespoons Extra Virgin Olive Oil (EVOO); salt and pepper to taste; 1 cup milk; 3 eggs