01 -
Line a rimmed baking sheet with parchment paper or wax paper. Make sure the surface is flat so the bark sets in an even layer.
02 -
Scatter the broken pretzels, cookie pieces, half of the candy-coated chocolates, and half of the crushed peppermint over the lined pan.
03 -
Place the white chocolate and coconut oil, if using, in a dry microwave-safe bowl. Microwave at 50 percent power in 20-30 second bursts, stirring after each burst, until smooth.
04 -
Pour the melted white chocolate over the crunchy layer. Use an offset spatula to spread it into a thin, even slab, leaving some toppings peeking through.
05 -
Immediately sprinkle on the remaining candy-coated chocolates, crushed peppermint, sprinkles, and flaky salt. Press very gently so the toppings stick.
06 -
Refrigerate for 45-60 minutes, until fully firm. Lift the slab from the pan and break it into pieces with clean hands.