Failed Welligton, how can I save the mignon?

I was preparing the welligton for tomorrow but the puff pastry just didnt work.

now I have a seasoned and sealed mignon on my fridge and I'm thinking on just putting it on the oven tomorrow and serving it with mashed potatoes, rice and duxelle on the side.

can this work?

I seasoned the mignon with salt, pepper and dijon mustard.