How Big Of A Cake To Feed 25 People?
Decorating By LittleMom Updated 6 Jun 2013 , 2:08pm by shannycakers
A 10" square will feed enough!!! Here's the list I follow....
All-Occasion & Party Cakes
Size-------Servings Round----------Servings Square
6--------------- 6-8------------------------8-10
8--------------12-15----------------------15-18
10-------------20-28----------------------25-30
12-------------30-35----------------------35-40
14-------------30-35----------------------55-70
16-------------75-85---------------------80-100
18-------------90-100-------------------115-135
1/4 Sheet Serves 25-30
1/2 Sheet Serves 45-55
Full Sheet Serves 100-125
Edited about a million times because it wouldn't stay spaced lol
No problem 
I would however, if it were me, make one slightly larger, or maybe make a second one JUST INCASE!!! I know every party I go to people go back for more then one slice and the 10" square would do JUST enough cake for them to have 1 piece 
So maybe offer her a second cake to be kept behind the scenes that isn't decorated as nicely but a little plainer for like say $10 bucks more or whatever...
Last month I had a gathering of 26 people. I made a 3 layer 10 inch round. Each layer was about 1.5 inches. I had exactly enough cake. I sent a hunk equal to about 4 slices home with someone. I was nervous about not having enough cake. I0 inches turned out to be the perfect size for me. Have fun at your event!
In general each cake mix will serve 15-20 people.
It depends on how big you want each serving. Most people only want a serving approx. 1x2x4. This is a bit smaller than the average cupcake.
The chart posted above is fair - giving more generous servings than I usually consider.
And your requirement is just a bit over the 'standard' size :(
Most sheet cakes are single layer. Take into consideration the above info - each recipe of batter used usually serves 15-20.
If it was me I'd serve a *single layer* 10" round; OR a 1/4 sheet (12x8x2); OR a 10x2 square for a bit more generous serving size.
In general each cake mix will serve 15-20 people.
It depends on how big you want each serving. Most people only want a serving approx. 1x2x4. This is a bit smaller than the average cupcake.
The chart posted above is fair - giving more generous servings than I usually consider.
And your requirement is just a bit over the 'standard' size :(
Most sheet cakes are single layer. Take into consideration the above info - each recipe of batter used usually serves 15-20.
If it was me I'd serve a *single layer* 10" round; OR a 1/4 sheet (12x8x2); OR a 10x2 square for a bit more generous serving size.
My cake mixes say they feed 12 servings. At the parties I go to and take the cake they want big pieces of cake, not a sliver to get the taste of it.
I go by the wilton serving charge and 10 inch cake will feed way more than 26 poeple... in my opinion, you will need to decide what size servings the person will need. I go by wedding servings for all my cakes, but that is just me. I would serve an 8 inch cake, but my cakes are very large and baked high.
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