Top Sirloin with Mushrooms & Onions

Day 9 and yes, this is the second time I’ve grilled a top round sirloin. It’s my husband’s favorite and while he is a good sport when it comes to my ridiculous cooking experiments, I need to feed him dinners I know he loves in between all the crazy. 😉

This one is a little different because I grilled mushrooms and onions to go with it and I used a little beef stock in the marinade to create a cheater au jus with it. At some point this summer, I’ll make an actual au jus and share the recipe.

Top Round Sirloin with Mushrooms & Onions

1 large sweet onion
8 oz button mushrooms
4 tablespoons butter
top round sirloin (this massive piece was 2.94lbs and we had leftovers)
1/4 + 2 tablespoons cup beef stock
your choice of steak seasoning, I used a less peppery version of my rub from day 2

Marinate your steak in beef stock and steak seasoning for at least a few hours. Mine sat covered in the fridge for about 6 hours before I grilled it.

You really don’t want to leave your grill unsupervised, so you should team up for this dinner. You could do the mushrooms and onions in a cast iron skillet on the grill if you want. I chopped the onions and mushrooms pretty thin and set up in the kitchen before I started the grill. I started about 2 tablespoons of butter and all of the onions before I even went outside. You want to put a lid on and sweat the onions for a bit first. Then I turned the heat off, left the lid on and went out to deal with the grill. Once the steak was on, I left it with Chris and came into finish off the onions. We prefer the mushrooms and onions to be separate, so once the onions are nice and caramelized I take them out and put the mushrooms in without washing the pan. The onion flavor makes them even better.

 

The additional 2 tablespoons of beef stock was poured into the dish I put the cooked steak in while it was resting. It soaks up a little and then as it’s cut and shared, each person can tip a little onto their place if they feel so inclined. I served this steak with boiled corn on the cob and roasted potatoes with Greek yogurt and chives.

 
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