Grilled Sirloin Steak with Coffee Mushroom Rub and a Signature Family Sauce

Grilled Sirloin Steaks with Coffee Mushroom Rub


You bet! Now once in a while, there’s nothing like a good steak on the grill, right? There’s something about that charred outer coating and for me, that pinkish red center, so when you cut a piece of steak the juice appears and it almost melts in your mouth.

Grilled Sirloin Steak with Coffee Mushroom Rub

There are so many recipes about searing your steak on high so it gets that charred outside coating, then cooking the meat so you arrive at your desired doneness. Or there’s the inverted recipes that you cook you meat close to your desired doneness, then sear it at the end for the charring on the outside.

And as for rubs, marinades and sauces, there are a pleather of types you can make to serve on or with your steak, or both for that matter! And there’s even chocolate or coffee rubs! Who would ever put coffee or chocolate on your steak? Well, I would! And as I found out, many others would too!

COffee Mushroom RUb on Sirloin Steaks before Grilling

I found a  recipe in Jimmy Buffets Margaritaville cookbook for a dried porcini mushroom rub for steak which is so very simple! Just put dried porcini mushrooms, Kosher salt and black pepper in a coffee grinder, and grind until you have a powder consistency. Well that got me thinking……why not put some coffee in there, too? So I did!

I took the rub, and smeared it all over some top sirloin steaks I got from Costco, and let them marinade with the rub for a few hours. Then I remember I had a recipe for a steak sauce that I got from my sister-in-law, Nancy, that I have modified slightly over the years that would be delicious with these steaks!


Now I love a thick steak. My husband, John, only likes a thick steak if it is filet. Don’t get me wrong, filet is AMAZING! But have you seen the prices of filet these days? And when I’m having 10 for dinner, unless I can get a great deal on filet, we’re getting prime sirloin steak! So my husband will just have to suffer through sirloin this week! And he’s not a fan of mushrooms either, neither is my sister, but honestly, you wouldn’t really know there is mushrooms in the rub once your steak is cooked to perfection! Trust me!

So putting the porcini mushrooms, Kosher salt, black pepper and ground coffee in a coffee grinder, you have the most amazing steak rub ever! Just sear those steaks on the grill at 400, then reduce to 350 to cook the center to 135  – 145 for medium rare. Let them rest for 10 – 15 minutes before serving, and you’ll have the juiciest, deliciously flavored steak ever! Put a pat of butter on each so it melts into the steak and adds a richer flavor! 

Grilled Sirloin Steaks with a pat of butter on teh top

And for those who like a sauce with their steak, this one wins every time! With some ketchup, Worcestershire, vinegar, brown sugar, salt, pepper, and a few additional ingredients, you cook over the stove for 15 -20 minutes, and you have a homemade sauce for your steak!

Signature Steak Sauce


Whether it’s summertime or not, grilling a sirloin steak and serving with this sauce, along with traditional baked potatoes and green beans, you can’t go wrong! In fact, all is good with the world at my dinner table! Good food, drink, and the best family ever? What more could I ask for?

Picture of my family eating sirloin steak

Until next time,

Let’s get cookin’ together,


Grilled Sirloin Steak with Mushroom Coffee Rub and a Family Signature Sauce

This Grilled Sirloin Steak with a Coffee Mushroom Rub and my Signature Sauce is to die for! Grilled to perfection this steak will cut like butter and your family and friends will LOVE it! And with my Signature Sauce you won't need A1 at all!
Prep Time45 minutes
Cook Time30 minutes
Course: Dinner
Cuisine: All
Keyword: grilledsirloinsteak, grilledtoperfection, mushroomcoffeerub, steakrub, steaksauce
Author: Madeline Kohler


  • 1 Outdoor or Indoor Grill
  • 1 Medium size sauce pot
  • 1 Coffee Grinder or small Food Processor


Mushroom Coffee Rub and Steak

  • 4 4-6 ounce sirloin steaks, preferably 2 inches thick
  • 4 ounces dried porcini mushrooms
  • 2 tsp ground coffee
  • 1 tsp Kosher salt
  • 1 tsp cracked black pepper

Signature Steak Sauce

  • 1 cup ketchup
  • 2 tbsp vegetable or avocado oil
  • 1 tsp Kosher salt
  • 1 tsp black pepper
  • 1 tbsp Worcestershire sauce
  • 1 tsp Dijon mustard
  • 1 tbsp brown sugar
  • 2 tbsp red wine vinegar
  • 1 tbsp garlic, minced
  • 1 tbsp white onion, minced


Mushroom Coffee Rub for Steak

  • Place all ingredients in a coffee grinder or small food proc)essor.
  • Prepare your grill for the steaks (usually 400°.
  • Grind or process on high until ingredients become a powder mixture.
  • Pat rub on both sides of steak and leave out for 30 minutes before grilling.
  • Grill steak to 130° - 135° (medium rare) turning once and remove from grill and let rest while making the sauce.

Signature Steak Sauce

  • Place all ingredients in a medium sauce pan on low - medium heat.
  • Cook sauce, for about 10 - 15 minutes, stirring frequently, keeping heat on enough so sauce cooks but does not burn.
  • Serve steak with sauce on top or on the side as a dipping sauce.

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