This Morel and Pea Rigatoni is one of our favorite things we've made recently. It's incredibly simple and a great way to use gorgeous Morel mushrooms. It's best to avoid rinsing mushrooms, but since Morels are hollow and have a honeycomb-like exterior, a quick soak is the best way to make sure your Morels are free of grit. Blanch your peas in a large pot of heavily salted water until they turn bright green, then cool them immediately in an ice bath or under very cold running water.