Preheat the oven to 150°C (300°F). Line a 23 x 33 cm (9 x 13 inch) baking tray with baking paper. • Roughly chop the nuts, sunflower seeds, and pepitas together in a food processor. Transfer to a large bowl and stir in the chia, sesame seeds and cinnamon. • Stir the honey, oil and vanilla in a small saucepan over low heat until well combined. Pour over the dry ingredients and stir well. • Wet your hands and press the mixture firmly onto the tray. Press with the back of a spoon to smooth the surface. Bake for 20 minutes or until deep golden brown. Cool completely on the tray, then refrigerate until chilled. Cut into bars or squares. These will keep for up to 2 weeks in an airtight container in the fridge.