Mix peanut butter and pumpkin until well blended. Add stevia and pumpkin spice and combine. Slowly add in oats and cranberries.

Spread the mixture in an 8×8 baking dish lined with parchment paper. Take it to a preheated oven at 350 degrees Fahrenheit for about 40 minutes.

Edges will begin to brown; insert toothpick into the middle to check for readiness. Remove from oven, and let the large bar cool before cutting it up into portion-sized bars.

Store them in airtight container for up to one week, or freeze for up to three months. You may also add other toppings such as chocolate chips, chopped walnuts, or raisins.