How to Make It
Step 1
Line a rimmed baking sheet with parchment paper, and coat with cooking spray.
Step 2
Combine sugar, water, miso, and butter in a large saucepan. Bring to a simmer over medium-high; cook, whisking occasionally, until golden brown, 13 to 15 minutes. Remove from heat; whisk in vanilla and baking soda. (Be careful; mixture will become very foamy.)
Step 3
Combine popcorn, pretzels, and vanilla wafers in a large heatproof bowl. Generously coat 2 rubber spatulas with cooking spray. Working quickly, pour caramel over popcorn mixture, and mix gently with rubber spatulas until thoroughly coated.
Step 4
Spread mixture on prepared baking sheet, and sprinkle evenly with salt. Cool to room temperature, about 20 minutes. Break into pieces.
