Heat the oven to 325°F/160°C. Line the bottom of a 10-inch/26-centimeter round cake pan with parchment paper.
In a large bowl, whisk the eggs and sugar until combined. Add the oil and honey and whisk until smooth.
Add half the flour, baking powder, baking soda, cinnamon and salt. Whisk to combine. Add the hot tea and whisk again, then add the remaining flour and whisk until smooth.
Pour the batter into the prepared pan. Bake until the cake is set and a toothpick inserted in the center comes out clean, 50 to 60 minutes.
Let the cake cool completely in the pan, about 3 hours.
Remove the cake from the pan and transfer to a serving plate. Pour the melted Biscoff spread over the top and spread evenly with a small offset spatula or the back of a spoon. Refrigerate for 30 minutes.
Meanwhile, beat the non-dairy whipping cream, pudding mix and Biscoff spread in a stand mixer until stiff peaks form. Transfer to a piping bag fitted with a round tip.
Pipe small mounds of Biscoff cream around the edge of the cake. Refrigerate for about 1 hour before serving.
For the best flavor and texture, serve the cake the next day. Store in an airtight container in the refrigerator for up to 4 days.