This Grown Up Margherita Grilled Cheese Sandwich is loaded with mozzarella cheese and sweet tomatoes and basil pesto all on sourdough bread. You will never be able to go back to plain old grilled cheese after you have tried this sandwich.
With April being Grilled Cheese month, I decided that we really needed to re-visit our delicious Grown Up Margherita Grilled Cheese Sandwich! Simply put, these grown-up grilled cheese sandwiches are amazing! I think I had this for lunch for four days in a row. The combination of the sourdough, mozzarella, pesto, and balsamic is so good. Grilled cheese is not just for kids anymore!
I highly recommend investing in a good bottle of aged balsamic. I recently purchased a REALLY good balsamic and it is amazing the difference between it and the cheap stuff. An aged balsamic is almost like a balsamic reduction, it comes out more thick like a syrup. The taste is incredible and it will last you a really long time!
If you can’t find a good thick aged balsamic, you can easily make a balsamic reduction. Just take regular balsamic vinegar and pour desired amount into a small sauce pan. Add some honey. (I would probably add 1 Tbsp honey per one cup balsamic vinegar) Then simmer, stirring occasionally until the mixture begins to thicken. Remove from heat and cool.