Of all the uncountable nouns this one is one of the hardest.
Chocolate has the following countable forms:
whole (chocolate)
piece
bar
chunk
Cake has the following countable forms:
whole (cake)
slice
piece
So you can say:
I made cakes.
I made chocolates.
She baked ten cakes.
He eat four chocolates.
Bread does not have 'bread' as a countable form. Some countable forms are:
loaf
roll
baguette
bloomer
bap
(there are many)
but 'bread' is not one of them.
You can say: "I baked bread" but you are using it in its uncountable form. If you add a picture, you may get it wrong.
There are some real examples from English language learners:
"I just baked the bread."
Bread is being used in its uncountable form and so you can't use 'the' as the determiner. Correction:
"I just baked this bread"
"I want to make a bread."
Bread is being used in its uncountable form and so you can't use 'a' as the determiner. Correction:
"I want to make bread."
"I'm good at baking cakes and breads. I really like the breads I baked."
This one is a great example. 'Cakes' is correct because there is a countable form called 'cakes'. There is not of countable form called 'bread' so it must have no 's'. The second sentences has a determiner but it is correctly used. Why? The 'the' is referring specifically to the bread that the writer made. It still can not have the 's'. Correction:
"I'm good at baking cakes and bread. I really like the bread I baked."
Here are some sentences with countable forms of bread:
I baked two loaves of brown bread today. They were delicious.
The burger I bought came in the softest bun.
I had two rolls with my soup.
In France they love baguettes.