- Roasted pumpkin seeds are available in many supermarkets. These are the small, tender center of the pumpkin seed. You can also roast your own, if you like. To roast pumpkin seeds, heat oven to 350°F. Combine 1 cup pumpkin seeds, 1 tablespoon melted Land O Lakes® Butter and 1/4 teaspoon salt in medium bowl. Place mixture onto ungreased 15x10x1-inch baking pan. Bake 30 minutes, stirring every 10 minutes, until seeds begin to brown.