Preheat oven to 170 degrees C and place rack in the center of the oven. Line a baking sheet with parchment paper.
In a large saucepan, add water, honey, coconut oil and vanilla extract, stir till honey is melted.
Add rolled oats, seeds, ground cinnamon, and salt. Toss together, making sure all the dry ingredients are coated with the liquid. Spread onto the prepared baking sheet and bake for about 15 - 25 minutes (depends on how hot your oven is) or until golden brown, stirring occasionally ( I stir it around every 5 to 10 mins) so the mixture browns evenly. Once lightly golden brown. Turn oven off and leave overnight in the oven. The browner the granola gets (without burning) the crunchier the granola will be.
Make sure to break up any large clumps of granola while the mixture is still warm. Once the granola has completely cooled, store in an airtight container or plastic bag. It will keep for several weeks.