Drizzle with chocolate.Melt chocolate chips in a microwave-safe bowl, then drizzle them over the bars before letting them set in the fridge.
Make a layered bar.Top the bars with a mixture of melted chocolate and peanut butter, then pour it over the oat mixture and let it set in the fridge.
Add dried fruit.Like raisins, dried cranberries, or dried blueberries.
Or experiment with different mix-ins.Like chopped-up chocolate, candy bars, M&Ms, or crushed cookies.
Swap the nut butter.Tryhomemade Nutella,protein cookie butter, or Biscoff cookie spread.