It looks like you can use either corn starch or almond flour in custard.
Baking a custard is iffy and can do what yours did. It is safer to make the custard on the stove and then pour it over the rhubarb. If you want to brown it, use a torch.
Hi Aria!
I am sorry that I did not get back to you faster today.
When you have a problem, there is a contact us link at the bottom of the page. There is also an email address to try: [email protected]
I hope the site keeps working for you!