You could be:
filling too much in one tin (Should not be filled more than half)
cake is not baked enough.
sometimes oven temperatures differ, so you have to adjust.
A basic combination of spices which has ingredients used in almost all recipes
Recipe By : Niru Gupta
Serving : 250 g
Ingredients
150 g jeera (cumin seeds)
50 g badi elaichi (black cardamoms), seeds only, (weighed before peeling)
25 g dal chini (cinnamon)
25 g laung (cloves)
25 g sabut kali mirch (pepper corns)
4 tej patta (bay leaves)
Preparation
Sun all the ingredients or place them over the oven (so that the gentle heat works on them, while you have something baking), to rid them of any moisture and then grind to a powder, in a food processor or mortar and pestle. Store in an airtight jar.
Grinding spices fresh each time is cumbersome, but makes the food delicious