I made my very first oven-baked top sirloin roast yesterday. I rubbed it in a garlic/ginger rub, and added salt pepper, and worscestshire sauce to it before sticking it in the oven at 325. Pretty standard. It turned out a tad dry, but it was only a 1.3 pounder.
Anyway, since it was a bit dry, I decided the sauteed mushrooms and red onions needed to be in more of a broth or thin gravy.
I sauteed them as normal (lots of butter, about 1 tsp minced garlic), then I added about 1/2 c vegetable broth, 1/2 c Sutter Home Merlot, and a little water. I used flour to thicken it just a smidge. I also added salt and pepper and garlic powder to taste.
Sorry it's not more of a recipe format, but that's what happens when you throw something together. Anyway, hubby and I were pleased with the results, and Baby Bear LOVED the mushrooms.