How to Make It
Preheat oven to 300°F. Lightly coat a rimmed baking sheet with nonstick spray. Melt butter in a large microwave-safe bowl. Add soy sauce, Worcestershire, and maple syrup and whisk to combine. Add cereal and pistachios and toss until evenly coated.
Transfer to prepared sheet and spread out in a single layer. Bake, tossing halfway through, until dry to the touch, 15 to 20 minutes. Add wasabi peas, toss, and let cool completely.