INGREDIENTS
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1 1/2 lbs. ground beef
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2 T olive oil, divided
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1 lb. mushrooms, washed, drained dry, and cut into quarters (I used brown Crimini mushrooms)
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1 large onion, chopped small
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4 cups cauliflower rice (I used packaged fresh cauliflower rice. If you’re chopping cauliflower in a food processor to make the cauliflower rice, start with 6 cups cauliflower pieces.)
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1 tsp. steak seasoning
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salt and fresh-ground black pepper to taste
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1 cup (or more) grated Mozzarella
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(or a beef bouillon cube) mixed with 1/4 cup water and then simmered to reduce to 1 tablespoon thick stock
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1 cup sour cream
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1/2 cup mayo
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1 cup grated Mozzarella cheese
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1/4 cup freshly grated Parmesan cheese
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1/2 tsp. steak seasoning