Stacked Vegetable Sandwiches with Cilantro Chutney

Ingredients

• 2 cups frozen green peas
• 4 cups cilantro leaves and tender stems (1 bunch)
• 2 tablespoons tahini
• 1 jalapeño pepper, stemmed and seeded (optional)
• ¼ cup fresh lime juice (from 2 limes)
• 1 teaspoon cumin seeds
• ½ tablespoon date paste
• 1 small garlic clove, coarsely chopped
• Sea salt
• 2 large russet potatoes (1½ pounds), peeled and halved crosswise
• 2 medium beets (1 pound), peeled and halved crosswise
• 2 medium cucumbers
• 2 medium tomatoes
• 1 medium red onion
• 20 slices whole wheat bread
• freshly ground black pepper