Line 2 cookie sheets with cooking parchment or waxed paper; spray paper with cooking spray.
In large bowl, mix cereals, sunflower nuts, peanuts and peanut butter chips.
In 10-inch nonstick skillet, melt butter over medium heat. Stir in sugar and corn syrup. Cook 4 to 5 minutes, stirring often, until sugar melts and glaze begins to thicken (mixture will look foamy).
Remove from heat; stir in vanilla. Pour over cereal mixture; toss until completely coated. Immediately spread mixture on cookie sheets. Cool completely.