Preheat oven to 325 degrees F.
In a bowl stir together all the ingredients except the sea salt. Prep a 9x9 baking dish with parchment paper, then pour the mixture in and spread it evenly, pressing the mixture down as well as possible.
Place in the oven and bake for 18-20 minutes until the syrup can be seen bubbling in between some of the nuts and seeds. Remove and let cool.
If possible when the mixture has cooled quite a bit but not completely, take a sharp knife and cut into 9 squares. They may come apart a little, but just gently press back together and let them cool the rest of the way. I place them in the freezer for 10-15 minutes or so until hard. Then store in an airtight container between sheets of parchment or wax paper.