Comfort food : Meatballs and Gravy

I cooked this lovely family dinner for the family this evening and they loved it. A break from the usual Swedish meatballs. I am a gravy lover and this was just the right juicy and flavor-rich recipe to cook on a regular day to make it feel special. Find the recipe ingredients below, and the rest at the original source  The Cozy Cook .  

P.S I added mushrooms to the gravy. I usually make sure to reuse my leftover ingrediance to not go to waste. 

Ingredients

Meatballs

3 Tablespoons Olive Oil

1 ½ lb. Ground Beef, 85% lean

½  Yellow Onion, finely diced

¼ cup Italian or Plain Breadcrumbs (optional)

2 cloves Garlic, minced

1 large egg, whisked

1 Tablespoon Ketchup

1 teaspoon Yellow Mustard

1 teaspoon Worcestershire Sauce

½ teaspoon Salt

¼ teaspoon Pepper

2 teaspoons Fresh Parsley, roughly chopped

Gravy

1 medium Yellow Onion, sliced into ½ inch strings

1 Tablespoon Unsalted Butter

1 cup Chicken Broth

1 cup Beef Broth

1 teaspoon Onion Powder

½ teaspoon Garlic Powder

1 ½ teaspoon Worcestershire Sauce

2-3 drops Kitchen Bouquet browning and seasoning sauce, optional ( I used soy sauce )

3 tablespoons Corn Starch

1/4 cup Cold Water