Pop 3 regular sized bags of microwave butter flavored popcorn. Remove all unpopped seeds. Place popped popcorn in a large bowl. Set aside.
Line two broiler pans (or large disposable foil pans) with foil. Set aside. Preheat oven to 250 degrees.
Melt butter in medium saucepan over high heat. Add in sugar, corn syrup and salt. Bring to a boil, stirring constantly. Boil one minute, remove from heat. Stir in baking soda and vanilla.
Pour over popcorn. Mix well. Pour evenly into two pans. Bake for one hour, stirring every 15 minutes. Remove from oven and pour onto a large piece of parchment paper to cool. Break into pieces. Return to large bowl.
Melt vanilla candy coating according to package directions. Whisk in peanut butter until creamy. Pour over popcorn. Mix gently until all popcorn has been coated. Add in Butterfingers.
Pour onto parchment paper again to cool and set, about 30 minutes. Store in covered, air tight container. ENJOY.
Notes
Stir. You need to stir the caramel corn every 15 minutes while it’s baking. This ensures the popcorn gets baked evenly and helps prevent the caramel from burning.
Break in to pieces. After baking, the caramel corn will likely have formed several large chunks (or even be stuck together in one big clump. Break it into pieces with your fingers BEFORE adding the melted white chocolate and peanut butter.
Storing and serving. Store Peanut Butter Caramel Corn in an airtight container at room temperature. When giving it as gifts, I transfer it to a paper gift bag or a decorative holiday tin!