1
Adjust rack to top position and preheat oven to 425 degrees. Bring a large pot of salted water to a boil. Wash and dry produce.
Halve, peel, and finely dice shallot.
Melt 1 TBSP butter (2 TBSP for 4 servings) in a large, preferably ovenproof, pan over medium heat. Add panko, a pinch of salt, and pepper; cook, stirring occasionally, until golden brown, 3-5 minutes. Turn off heat; transfer to a plate. Wipe out pan.