Made this today. I used casserole beef, that hadn't fully defrosted so not sure if it got processed adequately/properly. Some bits were a bit chewy once cooked.
I did find a bit bland but maybe I should've put more cheddar cheese on top but was rushed as my 5.5 month old had been crying.
Also, i would advise straining the beef mixture before putting into a baking dish or ramekin. I didn't do this and there was quite a bit of juice which spilled over the dish during cooking.
Here is a photo:
