1Place oven rack in the highest position. Preheat oven to 300 degrees F (150 degrees C). Line a large baking sheet with aluminum foil.
2Mix butter, honey, brown sugar, and salt together in a bowl; add pumpkin seeds and toss to coat. Spread coated seeds in 1 layer onto the prepared baking sheet.
3Bake in the preheated oven for 20 minutes. Stir seeds and continue baking for 20 more minutes. Sprinkle seeds with white sugar and bake until lightly browned, about 20 more minutes. Cool seeds and store in an airtight container.
Footnotes
Cook's Note:
Ensure you do not overheat the sugar. While pumpkin seeds can be baked for over an hour at 300 degrees (149 degrees Celsius), the sugar will caramelize and may burn.
Tip
Aluminum foil can be used to keep food moist, cook it evenly, and make clean-up easier.