Recently I was invited to a backyard party where I promised to bring along a dessert.  Before I knew it, the day had arrived and I hadn't made a thing.  Rather than panic, I decided to turn to a dependably delicious No-Bake Lemon Ricotta "Icebox" Crunch pie with a pretzel crust.  Not only is it relatively fast and easy to make, only requiring chilling time to set, but you don't even have to turn on an oven -- a great relief on steamy, hot summer days. As far as taste goes, well, this "knock your socks off" full-of-flavor pie is proof that just because it's no-bake doesn't mean it's lacking…