Appetizer Recipe: Miso Sweet Potato Bites

Name: Appetizer Recipe: Miso Sweet Potato Bites
Ingredients: 2 pounds unpeeled sweet potatoes (for the most attractive presentation, select sweet potatoes that are fairly uniform in diameter and shape); Oil for baking sheet; 1/4 cup vegan mayonnaise (can substitute regular mayonnaise); 2 tablespoons gluten-free white miso; 2 tablespoons tahini; 1 teaspoon lemon juice; 1/2 teaspoon grated ginger; Small pinch of cayenne pepper; 4 scallions, green parts only, thinly sliced on the diagonal; 1 tablespoon toasted sesame seeds (preferably black for contrast)