In the bowl of an electric mixer, cream the butter and sugar together until fluffy, 3-5 minutes.

Add in the starter, eggs and vanilla extract. Combine until mixed well.

Add in the flour, salt, and baking soda and mix until just combined.

Stir in the chocolate chips, pecans, and pretzel pieces.

Chill the dough for 1 hour.

Preheat oven to 325 F.

Line a rimmed baking sheet with parchment paper.

Scoop into 2 Tablespoon sized balls and place on the baking sheets.

Bake for 10-13 minutes, or until starting to turn golden brown around the edges.

Cool on the pan 5 minutes and then move to a wire rack to cool completely.