Caramelized Onion Spinach Dip

I was inspired by my family's classic spinach dip for this recipe. I added slowly caramelized onions for a hint of sweetness and depth of flavor. This dip is delicious with veggies or even potato chips.
  • Level: Easy
  • Total: 50 min
  • Prep: 10 min
  • Inactive: 10 min
  • Cook: 30 min
  • Yield: 6 to 8 servings
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Ingredients

5 tablespoons unsalted butter

2 tablespoons vegetable oil

1 red onion, thinly sliced

1 yellow onion, thinly sliced

Kosher salt and cracked black pepper 

1 cup mayonnaise

3/4 cup sour cream

4 ounces cream cheese, softened

1/2 teaspoon cayenne pepper

One 10-ounce box frozen spinach, thawed and drained

Cut-up vegetables, for serving, optional

Chips, for serving, optional

Directions

  1. Melt the butter in a large skillet over medium heat and add the oil. Stir in the onions and sprinkle liberally with salt and pepper. Reduce the heat to medium-low and cook the onions, stirring occasionally, until caramelized, 30 minutes. Remove from the heat and cool. 
  2. Combine the mayonnaise, sour cream, cream cheese and cayenne in a mixing bowl and mix vigorously until smooth. Add the onions and thawed and drained spinach and mix well. Taste and adjust the seasoning with salt and pepper as necessary. 
  3. Serve with cut-up vegetables or chips, if using.
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