The flavor of leeks is similar to garlic and onion but is much milder. If leeks aren't available, you can use regular onions or green onions instead.
If you love ham, substitute 1 cup chopped fully cooked ham for the turkey. You can also try Cheddar or Swiss cheese instead of the mozzarella.
Add a splash of red and green! Sprinkle baked strata with chopped red bell peppers and sliced green onions. Garnish with a sprig of fresh dill weed.