"Baked Caramelized Onion Dip is the best hot appetizer ~ learn how to properly caramelize onions for this simple dip with complex flavors...."
INGREDIENTS
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3 large yellow onions
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1 Tbsp butter
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1 Tbsp olive oil
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1 tsp salt
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1 Tbsp brown sugar
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1 Tbsp (or a touch more) cognac
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1/2 cup mayonnaise
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1/2 cup sour cream
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1 1/2 cups grated Gruyere cheese (about 6 ounces)
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1/2 cup grated Parmesan cheese
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1/2 tsp dried thyme (crush with your fingers as you add it)
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1/2 tsp garlic powder
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1 tsp coarse salt
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1 tsp fresh cracked black pepper