Preheat oven to 400 degrees.
Line a baking sheet with aluminum foil. Spray foil! Trust me, this step will make your life easier!
Set crackers, salt side up, on baking sheet in a single layer.
Bring butter and brown sugar to a gentle boil, stirring constantly. I usually set my heat to a little above medium heat. Once the the mixture hits a rolling boil (a boil that doesn’t stop when you quit stirring) remove your whisk or spoon. Turn the heat down to medium or just under. Boil for exactly 3 minutes.
Pour butter sauce over crackers. Spread with a spoon if necessary.
Bake for 5 minutes.
While candy is still hot sprinkle chocolate chips over the top. Spread them once they are soft enough.
Melt mint chips in microwave at half power in 30 second intervals. Stir after each interval. Continue until chips are melted and smooth.
Drizzle over candy. Use a knife to swirl.
Break into pieces! Store in an airtight container.