Hi
@CarolineWendy
Welcome to the site.
Congrats on the upcoming wedding and the fact that you are making the cake.
Yeah, for an 8 x 3 inch (not sure if you're making square or round), you definitely need to bake it for longer.
150°C is a good temp to use. Check your oven manual for which shelf would be best too. You don't always have to bake on the centre shelf. What kind of cake are you making? I bake an 8 x 3 inch Madeira at 150°C for 1hr 50mins, but for a 7 x 3 inch Victoria cake, I do 55-60 mins so it all depends on the type of cake you're making.
This is my 8 x3 Peppa Pig cake was Madeira: (Click on the picture and you will see the bare cake before I decorated it). Just to give you an idea.
I recently made the following Peppa Pig Cake for our friends Granddaughter and thought I would give you a guide on how to make your own. Please note that I made the cake the day before to allow it to cool and settle for 24hrs prior to decoration.
Day 1
Firstly I made an 8 inch Madeira cake using this method:
Madeira Cake All in one method.
The quantities I used were:
450 Grams Plain Flour (All-purpose for the US)
2 Teaspoons Baking Powder
400 Grams Caster Sugar (Superfine for the...
Here's the 7 x 3 Victoria Sponge
Here is a recipe and guide teaching you how to make your very own 7 x 3 inch Victoria Sponge Cake.
Equipment
7 x 3 Inch Cake Tin
Baking Paper (For lining your Tin)
Scales
Hand whisk/Stand Mixer
Mixing Bowl
Small Bowl
Spatula
Cake Greaser Spray
Tinfoil (Optional)
Wire Rack
Ingredients
200 Grams or 7oz Margarine
200 Grams or 7oz Granulated Sugar
4 Medium Eggs (At room temperature)
200 Grams or 7oz Self Raising Flour
Preheat your...
Just for comparison.
It's good that you're trying and testing the cakes beforehand and that you have given yourself enough time to master the timings. The larger the cake, the lower the temp, but you don't want to go too low which is why 150°C should be a good one to work with.
If you need anything else let me know.