Cream butter and sugar. You will add both the butter and the sugar to the bowl, then you will use a standing mixer or hand mixer to cream them together.
Add the flour and baking soda. It's best to mix the baking soda into the flour before you start adding. Then, slowly added in as the mixer is running so it adds in evenly and doesn't cause clumps.
Mix in eggs and vanilla. You can stop the mixer for this step and add the eggs and vanilla.
After those are well combined, add the candy pieces and pretzels. Turn the mixer back on and slowly mix candy in a little at a time. Finally stir in the potato chips
Bake at 375 F 10 to 12 minutes. After 12 minutes, if they are still real gooey, put them back in the oven for a couple minutes but keep a close eye on them.