Black-Eyed Pea and Walnut Lettuce Wraps

Ingredients

• 2 cups frozen black-eyed peas
• 3/4 cup water
• 1 onion (chopped)
• 1 red pepper (seeded and chopped)
• 6 oz butternut squash (cut in 1/2-inch (1 cm) dice)
• 1/2 cup walnuts (chopped)
• 1/4 cup sherry vinegar or wine vinegar
• 1/4 cup parsley (chopped)
• salt and pepper (to taste)
• 16 leaves iceberg or butter lettuce