I personally love this fruit very much. It is a nutritious fruit with that mild flavour and at time it fills stomach if you eat one or two. It tastes awesome with salt and chilli powder sprinkled if you love spicy food. You can find them in lots during the season if you live in Bangalore. Street vendors & supermarkets sell them throughout the season.
It is important to remove the guava seeds from puree completely. Baking time changes from oven to oven. So keep monitoring after 25 minutes of baking. You can bake using a cooker without weight. It is preferred to use ripe guavas. Warm it before every serving if you refrigerate the cake.