Preheat oven to 350 degrees F and line a 13×9 inch pan with parchment paper or no-stick (Release) foil.
Place pretzels in food processor and pulse to break – don’t pulverize. Add Fritos to processor and break them up with pretzels. Dump into pan. Unwrap peanut butter cups and throw them in the mix. Feel free to use more than 8.
Place butter in a non-stick saucepan and melt over medium heat. When butter is melted, stir in brown sugar. Bring mixture to a full boil and boil for 1 minute, stirring once or twice. Pour over Frito mixture and bake for 8 minutes in preheated 350 degree oven.
Cool at room temperature until you feel the pan is cool enough to be transferred to your refrigerator, then transfer to refrigerator to set the chocolate. When chocolate is set, lift from pan and break the candy up as you would almond toffee. You can eat it cold or let it come back down to room temp.