Strawberry Traybake Cake

At home I used to have strawberry cake all the time in the summer. From May you could go to the local fields and pick your own strawberries. Mum and I would always get a bucket and make a little outing to the fields to pick as many as we could carry. At home mum would then make strawberry jam while Omi would bake my favourite strawberry traybake.
This is a super delicious and simple Thermomix recipe and originally Omi would always add some Sprite for Fanta but I found it to be a little sweet so opted for sparkling water instead. Works a treat and the sparkling water really adds some lovely lightless to the sponge. In Germany we have packets of cake glaze for topping cakes and these come in a powder sachet and set similar to jelly but you can easily use strawberry jam or red jelly. 
4 large eggs
1 tsp vanilla bean paste
350 g caster sugar
180 g sparkling water
180 g sunflower oil
1 Tbsp baking powder
400 g plain flour
400 g strawberries (halved)
200 g red jelly (or strawberry jam or 2 packs of red cake glaze (German))

Preheat the oven to 180C. Line a large, deep baking tray with greaseproof paper and set aside.
Place the eggs, vanilla bean paste, caster sugar, sparkling water, sunflower oil, baking powder and plain flour in the mixing bowl. Combine 30 Sec. / Speed 5. Scrape down using a spatula and repeat 10 Sec. / Speed 5.
Pour the mixture in the prepared tin and bake for 30-45 minutes until golden and a skewer inserted com...