In a food process or blender, combine the oats, pumpkin puree, nut or seed butter, syrup, pumpkin pie spice and vanilla extract. Process on low for a few seconds. Scrap sides as needed. Process just until mixed well (note: some of the oats will remain whole).
Transfer mixture to bowl. Fold in pecans and chocolate chip.
Line a 9 x 5 inch loaf pan with plastic wrap or parchment.
Transfer mixture to loaf pan, spread out and press down firmly (very firmly – this is important).
Place in freezer for 30 minutes before slicing into 8 bars or 10 squares.
Bars hold up best if stored in an airtight container in the fridge.
