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Romano's Macaroni Grill Chicken Portobello

By Todd Wilbur

Score: 4.25. Votes: 8
In stock (9943 items available)
  • $0.00

Menu Description: "Grilled chicken breast with Portobello mushrooms, smoked mozzarella and demi glace, with a spinach orzo pasta."

Fire up the grill for this take on one of Romano's most popular entrees. After you grill a couple portobello caps, slice them thinly at an extreme angle to make wide slices that fit perfectly on top of grilled chicken breasts that have been rubbed with stone ground mustard (the kind with the whole mustard seeds in it). Romano's delicious demi glace is made from reduced veal stock, but a nice substitute can be made from a combination of canned beef broth and chicken broth. With plenty of garlic, rosemary and thyme in there, the aroma of sauce simmering on the stove will make everyone in the house drool.

Source: Top Secret Restaurant Recipes 2 by Todd Wilbur.

Update 1/25/17: If your demi glace is too thin add an additional tablespoon of cornstarch to thicken. 

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Get This

  • 2 portobello mushroom caps
Demi Glace
  • 1 tablespoon extra virgin olive oil
  • 6 cloves garlic, crushed
  • 3 cups beef broth
  • 2 cups chicken broth
  • 1 tablespoon cornstarch
  • 2 teaspoons chopped fresh rosemary
  • 1/2 teaspoon chopped fresh thyme
  • 1/4 teaspoon ground black pepper
Orzo Pasta
  • 1 pound orzo pasta, cooked
  • 1 tablespoon extra virgin oil
  • 2 tablespoons minced garlic (4 cloves)
  • 3/4 cup diced red bell pepper (1/2 pepper)
  • 1 cup chicken broth
  • 4 tablespoons butter
  • 1 teaspoon salt
  • 1/2 teaspoon ground black pepper
  • 4 cups julienned fresh spinach
  • 8 small skinless chicken breast fillets
  • 8 slices smoked mozzarella cheese
  • 8 teaspoons stone ground mustard (such as Inglehoffer)
  • Do This
    • Restaurant/Brand
      Romano's Macaroni Grill
    • Instructions
      1. Preheat your grill to high. Remove the stems from the Portobello mushrooms and brush the caps with a coating of olive oil. Sprinkle salt and pepper on the underside of each cap, then grill for about 3 minutes per side. Remove the mushroom caps from the grill to cool for about 5 minutes. Slice the mushrooms at an extreme angle with a very sharp knife so that you get very wide slices. You want the knife almost parallel to the cutting surface so that your slices will cover the chicken breast. Chose 8 of the biggest slices, cover them with something and set them aside, then chop up the left over mushroom to use in the sauce.

      2. Prepare the demi glace sauce by heating 1 tablespoon of extra virgin olive oil in a medium saucepan over medium/low heat. Crush 6 cloves of garlic with the palm of your hand and toss them into the oil along with the chopped mushroom pieces. Sweat the garlic and mushroom (slowly cook without browning) for 10 minutes. Add the beef broth and chicken broth, then whisk in cornstarch. Add the rosemary, thyme and black pepper and simmer for 40 minutes, then remove the sauce from the heat and cover it.

      3. Prepare the orzo pasta by boiling it in a large pot of water. You want it al dente, which means it should be slightly tough (we'll cook it more later). That should take about 7 minutes. Strain the pasta.  

      4. Heat up 1 tablespoon of oil in a large stockpot or use the same pot you used for cooking the pasta. Add 2 tablespoons of minced garlic and the diced red bell pepper and saute for 1 minute. Add the strained orzo pasta, 1 cup chicken broth, 4 tablespoons butter, 1 teaspoon salt, and 1/2 teaspoon ground black pepper. Cook for 10 minutes over medium heat, stirring occasionally.

      5. Pound the chicken breasts a bit so that they are uniform in thickness. Rub 1/2 teaspoon stone ground mustard on each side of each chicken fillet, then rub each with some oil. Grill the chicken for 4 to 5 minutes per side or until done. About 2 minutes before the chicken is done lay a slice of portobello mushroom on each piece. Lay a slice of mozzarella on the mushroom on each breast and finish grilling the chicken. When the cheese is melted, remove the chicken from the grill. 

      6. To serve dish, stir spinach into orzo and immediately spoon an equal helping onto each of four plates. Arrange two chicken pieces on each of the plates, then spoon the demi glace over the chicken and serve.

      Makes 4 servings.
Average rating:

Score: 4.25. Votes: 8
Rating of votes (8)
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Mar 28, 2014, 22:00

I'm looking forward to making this again really soon. The kitchen smelled great while it was cooking and the flavor was just as amazing.

Mar 25, 2014, 22:00

This is one of the most difficult dishes I have made but the result is worth it! This dish is absolutely beautiful with the red peppers and spinach to color the orzo. And since Macaroni Grill no longer offers this dish in my area I will be making it again. Great job Todd it looks and tastes just like the original.