Add the oats, pepitas and walnuts to a food processor and process into a gainy flour, if there are a few larger chunks or full seeds remaining that's ok.
1 cup rolled oats or quick oats, ¼ cup pepitas, ¼ cup raw walnuts
Add the chia seeds, hemp seeds, cinnamon and nutmeg and process for about 30 seconds.
¼ cup hemp seeds, ¼ cup chia seeds, 1 ½ teaspoons ground cinnamon, ¼ teaspoon ground nutmeg
Add the dates and process until it forms one big ball of thick and sticky dough.
1 ½ cups pitted packed, soft pitted medjool dates
If adding chocolate chips or raisins, add those now and pulse a few times to mix throughout.
1/3 cup raisins or dairy-free chocolate chips
Line a 7-8 inch square baking pan with parchment paper. Transfer the mixture to the pan, and use your hands to press down into the pan. If the mixture is sticking to your hands, wet them slightly to repel the stickiness of the dates. Transfer the pan to the freezer to set for 1 hour.
Once set, remove the large bar from the pan by lifting up the parchment paper. Slice into squares or bars.