Preheat the oven to 300°F (149°C). Line an 8-inch square baking pan with parchment paper, with enough overhang to remove bars from the pan. Set aside.
Using your hands, break apart the dried strawberry slices into small bits (around the same size as the dried cranberries).
In a large bowl, mix together the sunflower seeds, dried strawberries, pumpkin seeds, oat four, dried cranberries, and salt. Set aside.
Heat the honey and butter in a small saucepan over medium heat. Stir together until butter is melted and the honey is heated through. Remove from heat.
Pour the honey mixture into the dry mixture and mix until well incorporated using a large spoon. It will seem dry at first, but keep mixing.
Pour the sunflower seed mixture into the parchment-lined pan. Using the back of a large spoon that's been sprayed with non-stick spray, press the mixture into the pan until it's uniform.
Bake for 26-27 minutes or until the edges are lightly golden brown. Do not overbake, as they will dry out.
Allow to cool for 10 minutes, then remove the bars from the pan using the parchment paper and allow to cool completely (about an hour). They will harden as they cool.
Cut into 10 bars and enjoy!