Mustard-Brushed Halibut with Pea Puree - SippitySup

Ingredients

• 6 (6 oz) halibut filets (about 2 ¼ pounds total)
• 2 tablespoons Dijon mustard
• 4 tablespoons unsalted butter
• ¼ cup minced fresh shallots
• 1 pound fresh, shelled or frozen, thawed peas
• 1 cup water
• salt and pepper (as needed)
• ½ cup half-and-half (plus more if needed)
• 2 tablespoons olive oil
• pickled mustard seeds (optional, see recipe)