Preheat the oven to 325 degrees Fahrenheit. Line a baking sheet with parchment paper and set aside.
Combine 3 cups old-fashioned oatmeal and ¾ cup slivered almonds in a large bowl and set aside.
In a medium bowl, combine 6 tablespoons honey,5 tablespoons melted coconut oil,6 tablespoons lightly packed brown sugar, 1 teaspoon vanilla extract, and 1 pinch salt. Microwave for 15 seconds, then stir until well combined.
Pour the honey mixture into the oat mixture and stir until well combined. Spread it evenly on the prepared baking sheet.
Bake for 20-30 minutes, making sure to flip and stir the granola around every 6-8 minutes. Once it begins to turn fragrant and looks lightly toasted, remove it from the oven. It may be soft and not very "granola-like", but it hardens as it dries out so be careful to not overcook it. Mine generally takes about 22 minutes.
Allow the granola to cool completely and harden up. Stir in ½ cup flaked coconut and ½ cup Greek yogurt-covered raisins before serving or storing.