Hey, thanks for reaching out! A few things to check:
If you see the oven has an orange "z" button in the top right corner, then your food is done in the oven and you need to that button to send it to the bakery floor.
If you are never getting the orange "z", then your in game time may be paused. Press "3" to speed up time and see if that helps.
I tried to include pictures of what the oven would look like at different stages, but the comments were kind of buggy so I hope my descriptions are enough!Please let me know if this worked for you or if you are still seeing this issue and need further support, and thank you for trying out Farm to Bakery! :)