This is one of our favorite meals on a cold winter day! It is packed with flavor--making it the perfect comfort food. Plus it's pretty easy to make. I try to plan this meal when I know I'll have leftover mashed potatoes from the previous night's meal. But if I decide to make this on a whim, thankfully mashed potatoes are pretty easy to make quickly (just follow your favorite recipe). Note, if feeding a large crowd (or if you want lots of leftovers), I recommend doubling the recipe.

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1. Pre-heat oven to 400.

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2. Heat pan on medium heat and add 1 tbsp olive oil. Saute onion for 3-4 minutes and then add ground beef. Cook 5-7 minutes longer until ground beef is cooked through and crumbled.

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3. Add beef broth, Worcestershire sauce, marinara sauce or tomato paste, and salt to meat and mix in while continuing to cook on medium-low heat. (Note, add salt to taste. I like closer to 1 tsp, but start with a 1/2 tsp).

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4. Add bag of peas and mix in. Then stir in 1/2 Tbsp flour to thicken mixture a bit. (Note: use any gluten-free option if preferred.)

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5. Transfer the beef mixture to an 8x8 baking dish.

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6. Add thick layer of mashed potatoes on top of beef mixture and spread to cover beef.

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7. Top mashed potatoes with shredded cheddar cheese and parmesan cheese (Note: I like to add white cheddar cheese too--you can be creative with cheese flavors. You can use exact measurements or just eyeball the amount of cheese your prefer on top)

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8. Bake at 400 for 20 minutes or until cheese is melted and pie is bubbling.