Colossal Reese's Pieces Chocolate Chip Cookies

INGREDIENTS

• 3¾ cups all-purpose flour
• 1½ teaspoons baking soda
• ¾ teaspoon salt
• ½ cup unsalted butter, at room temperature
• ½ cup creamy peanut butter
• 1 cup light brown sugar
• ¾ cup granulated sugar
• 2 eggs
• 4 teaspoons vanilla extract
• 1½ cups semisweet chocolate chips
• 1 cup peanut butter chips
• 1 cup Reese's Pieces
• Fleur de sel, for sprinkling (optional, but awesome!)