Preheat oven to 350 degrees.

Line a 10 x 15-inch jelly-roll pan with non-stick foil; arrange broken pretzel pieces to fit the bottom of the pan in a single layer. You'll want to cover as much of the bottom of the pan as possible, but gaps here and there are just fine.

Melt the butter in a medium saucepan over medium heat and add the brown and white sugar.

Stir to combine and bring mixture to a boil.

Reduce heat and let the mixture gently bubble for 4 minutes and remove from heat.

Carefully pour sugar/butter mixture evenly over the pretzel layer, spread to cover.

Place pan with covered pretzels in the oven and bake for 10 minutes.

Once out of the oven, sprinkle white chocolate chips over the top.

Wait about 2 minutes for chocolate to melt, then use a spatula to gently spread chocolate chips into an even layer on top of the pretzel layer.

Sprinkle with Valentine colored M&Ms and festive Valentines sprinkles.

Cool to room temperature, then refrigerate for 2 hours.

Peel foil from chilled bark and break into pieces. ENJOY!