"California Casserole--penne pasta with tomatoes, spinach, corn, mushrooms, peppers, cheese and more! Make it fast in one pot, your Instant Pot...."
INGREDIENTS
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1 pound lean ground beef
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1 cup diced onion
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8 ounces sliced mushrooms
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1 ½ tsp celery salt
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1 ½ tsp garlic powder
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½ tsp ground mustard
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1 tsp chili powder
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1 tsp black pepper
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2 cups chicken broth
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8 ounces uncooked penne pasta
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1 red bell pepper, cored and diced
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1 ½ cups frozen sweet corn
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1 (8 oz) tomato sauce
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1 (4 oz) can diced green chiles
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1 (14.5 oz) can diced tomatoes
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1 tsp kosher salt
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¼ cup heavy cream
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2 cups chopped spinach
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1 cup shredded cheddar cheese