Preheat your oven to 300 degrees F. Place the coconut oil or coconut butter in a heatproof dish or rimmed baking pan in the oven for a few minutes to melt.
In a large mixing bowl, combine the oats, pecans, pepitas, coconut flakes, flax seeds, sesame seeds, and lavender flowers. Sprinkle in the cinnamon, nutmeg, and salt.
In a small bowl or glass measuring cup, combine the honey, melted coconut oil, vanilla extract, and lavender essence. Stir well to combine.
Pour the liquid ingredients over the oat mixture and mix thoroughly with a wooden spoon to combine. The liquid should be evenly distributed so that there are no dry patches.
Spread the oat mixture into one or two baking pans. You will need two 13x9-inch pans or one large rimmed half-sheet pan.
Bake for about 45 minutes, stirring the granola every 15 minutes and rotating pans if you are using more than one. The granola should look golden, but not dark. It will crisp up as it cools.
Cool the granola in the pans. Stir in the dried blueberries last, and store in an airtight container at room temperature for up to 1 month.