Place oats and walnuts onto lined baking tray and toast for 8 minutes in cold oven set to 200ºC. Remove and cool slightly. Reduce oven temperature to 180ºC.
Place into Thermo bowl and mill 2 sec/speed 8. Remove from bowl and set aside.
Place sugar, butter, cream and vanilla bean paste into Thermo bowl and cook 5 min/80ºC/speed 1.
Whip 1 min/speed 5, scrape down sides of bowl and lid and repeat.
Add nut mixture and flour into bowl and blend 5 sec/speed 5. Scrape down sides of bowl if needed.
Dollop mixture using a tablespoon onto lined tray and bake 10 minutes or until golden and just going darker on the edges. They will spread during baking.
Cool completely.
Melt chocolate in microwave 2 min/high. Stir with metal spoon or knife. Dip each biscuit into melted chocolate and allow to set a little before scraping a pattern with a fork. Decorate with garnishes of choice. Set in fridge before serving or wrapping.