- Preheat oven to 360°F (180°C). 
- Cut the tamarillos in half and scoop out the flesh into a bowl. Add 1/4 cup honey and use a spoon to break up any large chunks. Stir and let the mixture sit for 30 minutes to macerate. 
- In a large bowl, cream together the softened butter, honey, and vanilla until light and fluffy. 
- Add the eggs one at a time, beating well after each addition. 
- Fold in the cinnamon, orange zest and juice, then gradually add the sifted flour, baking powder, and almond flour, using a spatula to gently combine. 
- Pour the batter into a greased and lined springform pan or 8 Inch Tart Pan with Removable Bottom . 
- Spread the macerated tamarillo mixture evenly over the top of the batter. 
- Bake for 30 minutes. 
- In a small bowl, combine the melted butter, brown sugar, orange zest, cinnamon, and sliced almonds. 
- Remove the cake from the oven and sprinkle the topping mixture evenly over the top. 
- Continue baking for 20-25 minutes, or until a skewer inserted into the center comes out clean. 
- Let the cake cool slightly in the pan before transferring it to a wire rack to cool completely. 
- Serve with ice cream, whipped cream, or enjoy it on its own.