INGREDIENTS
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4 tbsp. butter, divided
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2 lb. yellow squash, sliced into 1/2"coins
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1 onion, chopped
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2 cloves garlic, minced
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1/4 tsp. cayenne pepper
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kosher salt
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Freshly ground black pepper
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2 eggs
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1/2 c. sour cream
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1/4 c. mayonnaise
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1 1/2 c. shredded Cheddar
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1 c. freshly grated Parmesan
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2 sleeves Ritz crackers, crushed