Onion Dip

https://www.allrecipes.com/recipe/283221/everything-onion-dip/

Everything Onion Dip by Chef John

• 1 medium yellow onion
• 2 tablespoons olive oil
• 1 teaspoon kosher salt, or more to taste
• 1/2 cup minced shallots
• 1/2 cup diced red onions
• 1/2 teaspoon granulated garlic
• 1 tablespoon minced dried onion
• 3/4 cup mayonnaise
• 2 cups sour cream
• 1/4 teaspoon freshly ground black pepper
• 1/8 teaspoon cayenne pepper
• 1/3 cup thinly sliced green onions, or more to taste
• 1/4 cup thinly sliced fresh chives, or more to taste

1. Cut both ends off the yellow onion and cut evenly into 2 halves. Remove and discard skin. Place onion halves on a cutting board with cut-sides down. Make vertical slices against the grain, then turn and slice across the cuts to chop. Chop again if you'd like smaller pieces. You should have about 2 cups chopped onion.
2. Heat olive oil in a large skillet over high heat. Transfer onion and salt into the hot oil. Cook until onions are deep brown in color, 7 to 8 minutes. Add shallots and red onions; stir and saute until they start to soften and sweeten, 3 to 4 minutes. Turn off the heat and stir in garlic and dried onion. Set aside to cool completely, about 20 minutes.
3. Combine mayonnaise, sour cream, pepper, cayenne, and cooled onion mixture; mix until thoroughly combined. Cover and chill in the refrigerator for 4 to 12 hours, or overnight.
4. Remove dip from the refrigerator and stir in green onions and chives. Taste and adjust seasoning. Transfer dip into a serving bowl and garnish with more green onions and chives to serve.