In a medium mixing bowl, combine the Greek yogurt, peanut butter, maple syrup, and vanilla extract. Stir until completely smooth with no streaks.
If using, gently fold in the mini chocolate chips until evenly distributed.
Line a baking sheet with parchment paper.
Using a small cookie scoop or two spoons, drop 1-tablespoon-sized rounded dollops of the mixture onto the parchment. Leave a small space between each bite.
If desired, sprinkle chopped peanuts, sea salt, or a few extra chocolate chips on top of each bite.
Place the baking sheet in the freezer for 2 to 3 hours, or until the bites are completely frozen and firm.
Once frozen solid, transfer the bites to an airtight freezer-safe container or freezer bag. Store for up to 2 to 3 weeks.
Serve straight from the freezer. Enjoy!