INGREDIENTS
3 tbsp
unsalted butter
3 tbsp
olive oil
1
large yellow onion, diced
2
carrots, peeled and diced
12 oz
cremini (baby portobello) mushrooms, cleaned and quartered
4 cloves
garlic, minced
1 1/2 tsp
dried oregano
1 tbsp
kosher salt (, divided)
6 tbsp
tomato paste
2
lbs ground beef (I usually use 85/15)
1 cup
beef stock
1 tsp
Worcestershire sauce
1/2 tsp
black pepper, more or less to taste
3 cups
mashed potatoes
1/3 cup
grated/shredded Parmesan cheese
1 1/2 tbsp
butter, cut into small pieces
minced fresh parsley, for garnish