Line a baking tray with baking/parchment paper and preheat oven to 180°C (360°F)Toss all the ingredients into a blender or food processor and blitz until it resembles wet batter. To make blending easier, put the wet ingredients (banana, date syrup, and vanilla extract) closer to the blade.
The batter will be pretty wet, but that's normal. Use 1 or 1.5 tablespoon cookie scoop for each cookie, then use a butter knife to neaten and flatten the edges of the cookies. Bake for 12 to 15 minutes, then leave them to cool completely on the tray. The cookies are extra soft when they come out of the oven and will set when cooled.
Notes
(NOTE 1) Oat flour is a whole grain flour made from rolled oats. It's a gluten-free alternative to wheat flour in baking and cooking. Oat flour has all the healthy things oats do, like fibre, vitamins, and minerals, with a slightly sweet and nutty flavour. You can get oat flour at health stores and some supermarkets or make it yourself. I grounded my rolled oats into flour using a high-speed blender.(NOTE 2) Date syrup goes by other names such as date molasses, date honey, and debes. Date syrup is a thick, dark brown syrup made from softened dates. You can usually find date syrup at the supermarket near the sugar or health section. If you're making these cookies for infants between 6 to 12 months old, make sure there's no sugar added in the date syrup.Leftovers - Allow the cookies to cool completely at room temperature, then transfer them into an airtight container and store them in a cool area. They should keep for up to 3 days.I've used a third-party application to calculate the calories and nutritional information, so please use this as an approximate guide only.Cooking measurements are in Australian standard spoon and cup measurements. For specific details and conversions, visit ourAustralian Cooking Measurements page.