Question

Is cooking bread an endothermic reaction?

Answer 1

I think this is a exothermic process.

Explanation:

Cooking bread is not a single reaction, so it is difficult to answer this question.

In my opinion, the most important process of cooking bread is the ethanol fermentation. Baker's yeast is needed for the fermentation.
`C_6H_12O_6 -> 2C_2H_5OH + 2CO_2`

In general, fermentation is an exothermic process.
For example, the heat of fermentation was already studied by 1901.
http://onlinelibrary.wiley.com/doi/10.1002/j.2050-0416.1901.tb00241.x/pdf