Casserole to slow cooker

I want to cook this https://www.greatbritishchefs.com/recipes/miso-steak-noodles-recipe#google_vignette

Which is 2.5 to 3hours in a casserole dish in the oven.

Can anyone help me convert this to a slow cooker for time with high low or medium please?

I dont have chuck steak so it will be beef stewing steak if that helps at all. Thank you.