Beef Shepherd's Pie

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From food network. From now on, my only shepherd's pie recipe.

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Steps

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Preheat oven to 375 degrees f.

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For beef mixture:.

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Heat the olive oil and 2 tablespoons of the butter in a large skillet over medium heat.

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Add the onion , carrots , celery , mushrooms , garlic , half the salt , and oregano.

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Cook until vegetables are tender , about 10 minutes.

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Stir in the tomato paste and cook until mushrooms are soft and tomato paste has turned brick red , about 8 minutes more.

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Stir in the beef , the broth , the remaining salt , the worcestershire , and some pepper , breaking up any large clumps of meat , cook until the meat is no longer pink , about 3 minutes.

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Transfer the meat and vegetables to a 2-quart oval casserole dish and spread the mashed potatoes over the top , leaving a 1 / 4-inch boarder around the edge.

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Make a decorative pattern on the top of the potatoes , if desired.

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Sprinkle with cheese , if using , and dot with the remaining tablespoon of butter.

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Bake until potatoes brown and the juices bubble around the edge , about 40 minutes.

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Let cool fo.

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Ingredients

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extra virgin olive oil, unsalted butter, onion, carrots, celery rib, cremini mushroom, garlic cloves, kosher salt, dried oregano, tomato paste, ground beef, low sodium beef broth, worcestershire sauce, fresh ground black pepper, mashed potatoes, parmesan cheese, russet potatoes, whole milk, fresh flat-leaf parsley