Mix together the granola, melted butter, and brown sugar until well combined. Press the mixture into the bottom of a 9-inch springform pan.
In a large mixing bowl, beat the cream cheese until smooth. Add in the sugar and eggs, one at a time, while continuing to beat the mixture. Mix in the vanilla extract and ground almonds, making sure everything is well combined.
Pour the cheesecake mixture into the prepared crust and smooth it out with a spatula.
Bake for 45-50 minutes, or until the cheesecake is set but still slightly jiggly in the center.
While the cheesecake is baking, mix together the segmented blood oranges, grapefruit, and honey in a medium bowl.
Once the cheesecake is done baking, allow it to cool to room temperature before topping it with the fruit mixture.
Cover the cheesecake and refrigerate for at least 4 hours, or overnight, before serving.