This is a tweaked version of a candy recipe I've found in a Hershey's cookbook. I've made some improvements.
1 stick unsalted butter
1 Tbsp light corn syrup
1 cup sugar
16 oz mixed nuts (the Planters Macademia nut/walnut/etc works best and comes in 8oz cans)
1/2 "tube" marzipan
1 bag semi-sweet chocolate chips
Line 9x9 baking dish with parchment paper (sides as well as bottom). Spread out marzipan paste to evenly coat bottom of pan. Then pour chocolate chips on top.
In saucepan, melt together butter, corn syrup, and sugar on low; stirring constantly. Add nuts. Stir to coat. Increase heat to medium. Continue stirring mixture till sugar syrup begins to turn to a foamy light brown color and nuts are sticking together in clumps.
Take off heat and pour/spread into pan on top of chocolate chips. Cool and then refrigerate for about 3 hours to allow candy to set up completely.
Cut/break into smaller peices and enjoy!