Caprese Frittata

Name: Caprese Frittata
Ingredients: 1 teaspoon olive oil; 2 teaspoons garlic (minced, or 2 large cloves garlic, minced); 250 g grape tomatoes; 1/2 cup fresh basil leaves (stems removed, finely sliced or shredded); 1 pinch salt (to season - optional); 8 eggs (large); 1/4 cup unsweetened almond milk (or skim/low fat milk); 1/2 cup baby spinach leaves (pre washed and ready to use); 3 ounces mozzarella cheese (fresh, slice thinly into rounds); 2 tablespoons grated mozzarella cheese (optional); 1 drizzle balsamic glaze