Rib Eye w/asparagus&white mushrooms&dark roast rub

Ingredients this recipe for 2
1 rib eye 11/4"thick
3T dark roast coffe(whole bean is best)
3T dried rosemary
1T kosher salt
1T black peppercorns
3-4 medium sized red potatoes
6-8 white mushrooms
1/2 bunch asparagus
1/2 lemon
I like using this rub for different cuts of meat.pork loin,tenderloin,chops but I think my favorite is a nice rib eye.
for rub I have an old coffe grinder I use for gtinding spices for me its a must have.Place coffe,dried rosemary,s&p in grinder grind until fine.rub both sides of steak let stand at room temp. until ready to cook
dice potatoes toss in olive oil,ground rosemary&s+p place in oven at 375 for 1 hour.
heat saute pan w/olive on med-high heat until it just starts to smoke seare both sides of steak 11/2-2minutes each side place in 350 degree oven(just turn down if potatoes are still cooking)for 6-7min. for medium rare,7-8 for medium let stand on cutting board 5 min.
while steak is in the oven steam mushrooms(quartered)&asparagus(1" pieces) until tender toss in fresh lemon s+p& 1t butter