Preheat your oven to 400° F. Line a large baking sheet with parchment paper.
Sauté your chopped onion in a little olive oil until just translucent - 2 minutes.
In a large bowl combine the meatball ingredients with your hands. Form medium sized balls and place onto the baking sheet. Bake for 20 minutes or until internal meatball temperature registers 160° F.
Sauce:
On medium high heat, melt your butter in a pan and add the flour. Continuously whisk until the rue turns brown. Slowly add and whisk in the broth and then heavy cream.
Next, mix in the Worcestershire and Dijon and bring everything to a boil. Lower heat to simmer and cook until your sauce thickens, stirring occasionally. Season with salt and pepper to taste.
Add the cooked meatballs to the pan and continue to simmer for another few minutes, drizzling them with the sauce.
Notes
You can also pan fry the meatballs in some butter and olive oil.Garnish with fresh parsley and freshly cracked black pepper.Serve with my Best Mashed Potatoes recipe, rice or egg noodles.