I’d been toying with the idea of making a Vegan Tiramisu, and what with that and my sister’s birthday coming up, I realised that I needed to find a really good eggless sponge-cake recipe. Looking on the internet I found so many recipe variations, each using a different combination of egg-replacers, kinds of flour, proportions of sugar to flour, and baking times and temperatures – there was no way I could tell just by looking what the difference would be in the end result! So I decided to conduct a comparative experiment to find the best eggless sponge-cake recipe – a SPONGE-OFF!

First of all I came up with 5 different options, adapted from recipes I had found and incorporating tips and suggestions for eggless baking. I wanted my sponge to be healthy and not have any hydrogenated fats, so where the original recipes called for Vegetable Oil I substituted this with an egg replacer and/or other binding ingredients.
Rather than baking 5 complete cakes, I calculated a third of the ingredients for each recipe option to make test-sample cupcakes.
Option 1
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| Recommended Baking Time: 25-30 mins @ 180C |
Ingredients:
- 200g/ 7oz Self Raising Flour
- 3 level tspns Baking Powder
- 115g/ 4oz Raw Cane Sugar
- 3 Flax-Seed ‘eggs’ (3 tablespoons ground Flax Seeds whisked with 9 tablespoons of cold water)
- 2 tsp Vanilla Essence
- Extra water if needed.
Option 2
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Recommended Baking Time: 40 Mins @ 180C |
Ingredients:
- 225g/ 8oz Self Raising Flour
- 2 tspns Baking Powder
- 175g/ 6oz Raw Cane Sugar
- 3 Vinegar 'eggs' (3 Tablespoons Cider Vinegar + 3 Tspns Baking Soda)
- 1/2 tsp Vanilla pod seeds (I ran out of Vanilla Essence)
- Extra water if needed
Option 3
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| Recommended Baking Time 40 mins @ 180C |
Ingredients:
- 450g/ 16oz Plain Flour
- 50g/ 2oz Soya Flour
- 50g Agave Nectar (I substituted this for the sugar to try it out - for more info on this amazing ingredient see here)
- 4-5 tsp Baking Powder
- 3 Flax-Seed 'eggs'
- Extra water if needed
Option 4
Adapted from the "Vegan Sponge Cake" recipe posted on
Elstro's blog.
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| Recommended Baking Time: 30 mins @ 160C |
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Ingredients:
- 250g/ 10oz Self Raising Flour
- 1 tsp Bicarbonate of Soda
- 3 Vinegar 'eggs' (3 tablespoons Cider Vinegar + 3 tspns Baking Soda)
- 200g/ 8oz Raw Cane Sugar
- (This was also supposed to have 150ml Orange Juice but I forgot to add it for the test!)
- Extra water if needed
Option 5
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| Recommended Baking Time: 25 mins @ 180C |
Ingredients:
- 225g/ 8oz Plain Flour
- 225g/ 8oz Raw Cane Sugar
- 1 tsp Baking Powder
- Pinch fine salt
- 175 ml/ 6 fl oz Soy Milk
- 1 Ripe Banana, Mashed
- 3 Vinegar 'eggs' (3 tablespoons Cider Vinegar + 3 tspns Baking Soda)
- Extra water if needed
The Experiment
First I got to work labeling my bowls, preheating the oven and preparing the trays of cupcake cases.
Then, I sifted out all the dry ingredients and ground up the flax seeds ready to be mixed with water for the recipes requiring the 'flax-seed' egg replacer.
Finally at the last minute, I added the wet ingredients and egg replacers, quickly mixing each dough just enough to combine the ingredients without over-mixing (I read that the longer you mix it, the denser the cake will be).
Unsurpisingly things got a little hectic, and in the heat of the moment I forgot to add orange juice to one of the recipes, ran out of vanilla essence, and put Option 4 in the same tray as the ones that were to be baked at 180C. Still, nothing went too awry!
With the leftover dough I made a second batch of testers to put in later and bake for less time to see how this would affect the outcome.
After putting the cakes in the oven, I tasted the mixtures (purely in the interest of scientific rigour) and made the following observations:
Option 1 - Nice, like porridge, plain but slightly sweet.
Option 2 - Bland dough-like mixture.
Option 3 - Sticky, bland porridge-like dough.
Option 4 - Yummy dough - a bit runny.
Option 5 - Tastiest dough. Banana-y.
Rather than trying to take out each kind of cake at a slightly different time, I ended up taking the whole first batch out after 20 mins, as they seemed to already be brown and in danger of burning. I took out the second batch after 15 mins.
I called in my independent taste-tester, and the fun began!
Our findings were as follows:
Option 1
1st Batch - baked for 20 mins
Crispy crust, soft interior, good smell, bready texture, not too sweet.
2nd Batch - baked for 15 mins
Good smell, better than the first one, lighter.
Option 2
1st Batch (20 mins)
Soft but sour, not sweet enough
2nd Batch (15 mins)
Better, doughy inside, not so sour
Option 3
Chewy but pleasant
Option 4
Nice delicate crust, a little chewy, good colour, finer texture - less bready. Good smell.
Option 5
Bready, good banana flavour but slight aftertaste of bicarb.
Overall verdict: The best cake was from the second batch of Option 1, baked for 15 mins at 180C.
Lessons learned:
- Care should be taken when using the vinegar/bicarb mix as an egg replacer - perhaps use less than is strictly equivalent to the original number of eggs and add more sugar to compensate for the sour taste of the baking soda.
- Banana, while giving a nice flavour to the dough, will also make it heavier and more 'bready' in texture.
Things to consider:
- Using a combination of flax-seed 'egg' replacer and the vinegar-bicarb mix.
- Using fruit juices etc. to sweeten the sponge.