Burgers Smothered in a Caramelized Onion, Mushroom and Blue Cheese Sauce

Burger season is finally here and I have been waiting for it! A while ago I made a steak tenderloin in a mushroom and blue cheese sauce and while I was eating it I thought that the sauce would go great on a burger. I have just been itching to try the burgers with caramelized onions, mushrooms and blue cheese sauce ever since. Normally when I make burgers I make them with a theme where I add lots of flavours and ingredients directly to the burgers to add flavour and help keep them moist when they cook. This time however I wanted a basic, unflavoured burger so that the flavours of the sauce would not get lost. In an effort to make sure that the burgers stayed nice and moist I went with a fattier ground beef at about 70/30. The burger recipe itself is quite basic, being just the ground beef seasoned with some salt and pepper. The key to adding flavour here is to cook the burgers on high heat to caramelize or slightly char the outside while leaving the inside nice and moist. The burgers with caramelized onions, mushrooms and blue cheese sauce turned out nicely! The sauce was so tasty and it went really well on the burgers. Caramelized onions, mushrooms and blue cheese is such a great flavour combination! The burger patties themselves were nice and moist despite the high heat cooking. I served the burgers on slightly grilled whole wheat buns with a side of sweet potato fries.

Burgers Smothered in a Caramelized Onion, Mushroom and Blue Cheese Sauce

(makes 4 burgers)
Printable Recipe

Ingredients:
1 1/2 pound ground beef
salt and pepper to taste
4 buns (lightly grilled/toasted)
caramelized onion, mushroom blue cheese sauce (see below)
lettuce (optional)
tomato (optional)
blue cheese (crumbled, optional)

Directions:
1. Season the ground beef with salt and pepper.
2. Form into 4 patties 3/4 inches thick and press your thumb into the middle to form a depression top prevent bulging.
3. Brush the patties with oil, place on grill and cook until golden brown and slightly charred, about 3-5 minutes per side.
4. Set aside, cover and let rest for 10 minutes.
5. Assemble burger with buns, patties, caramelized onion, mushroom blue cheese sauce, lettuce and tomato and garnish with some more crumbled blue cheese.

Caramelized Onion, Mushroom and Blue Cheese Sauce

Ingredients:
2 tablespoons butter
1 onion (sliced)
2 cloves garlic (chopped)
1 teaspoon thyme (chopped)
8 ounces mushrooms (sliced)
salt and pepper to taste
1 splash brandy
1/4 cup beef broth
1/2 cup blue cheese (crumbled, I used gorgonzola)

Directions:
1. Melt the butter in a pan.
2. Add the onion and saute at medium heat until caramelized, about 20-30 minutes.
3. Add the garlic and thyme and saute until fragrant, about a minute.
4. Add the mushrooms, season with salt and pepper and saute until tender, about 10-15 minutes.
5. Add the brandy and broth and deglaze the pan.
6. Simmer until it has reduced by half, about 3-6 minutes.
7. Remove from heat and stir in the blue cheese.

Similar Recipes:
Steak Tenderloin in a Mushroom and Blue Cheese Sauce
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Salsa Verde Turkey Burger
Bulgogi Burgers
Penne with Asparagus and Mushrooms in a Gorgonzola Sauce