Gather your supplies
Begin by grating your cheese if it isn't already grated
Add in mustard
And Worcestershire sauce, milk, pepper...
Mix the cheesy mixture together
Meanwhile heat a pan to wilt the spinach in
Wilt that spinach!
Lightly (important) toast your bread
Keep on wilting on low heat
Add the spinach to the cheese mixture, make sure all excess liquid is drained beforehand
Get any remnants!
Spread your cheese/spinach mixture on the toast
Place in toaster oven on 400 for 2 mins
Get grandma to give a thumbs up!