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A hand dipping a piece of bread into a casserole dish filled with a creamy baked dip topped with chives and browned bits. There is a cloth napkin and a loaf of bread in the background.
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3-Ingredient Easy Onion Dip Recipe

My Hot Onion Dip Recipe is the easiest appetizer ever with only 3-ingredients! Sweet Vidalia onions, Swiss cheese, and mayo are baked until hot and bubbly. It's my favorite go-to when I'm asked to make a last minute appetizer for game day, holiday buffets or any occasion! Serve with pita, tortilla chips, bread or if even fresh veggies if you want to keep it low carb.
Course Appetizer
Cuisine American
Keyword hot onion dip, onion dip, onion swiss dip
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings 8
Calories 500kcal
Author Katie Cooksey

Ingredients

  • 2 cups Vidalia onions diced
  • 2 cups mayonnaise
  • 2 cups Swiss cheese shredded
  • chives fresh, diced (optional)
  • pita bread, pita chips, baguette, tortilla chips, crackers, fresh veggies, etc. for serving

Instructions

  • Preheat oven to 400° F.
  • In a large bowl, combine all ingredients.
    A glass bowl containing shredded cheese, chopped onions, and a dollop of mayonnaise on a light grey surface with chives, an onion, and a striped cloth nearby.
  • Spread mixture into a 9x7 (or 8x8) baking dish and bake for 20-25 minutes or until hot and bubbly and the top is JUST beginning to brown.*
    A white rectangular baking dish filled with grated cheese or a similar food topping, placed on a light gray surface with some green herbs partially visible in the background.
  • Garnish with fresh chive if desired and serve warm with pita bread, pita chips, baguette, tortilla chips, crackers, fresh veggies, etc.
    A baked, creamy casserole topped with melted cheese and sprinkled with chopped green herbs in a white square dish. An onion and a kitchen towel are placed to the side.

Notes

*Once you see the top browning, remove from oven immediately. If you let it go much longer, the mayonnaise will break (meaning the oil will separate) and you'll be left with an oily mess instead of a nice thick dip. 

Nutrition

Calories: 500kcal | Carbohydrates: 4g | Protein: 8g | Fat: 50g | Saturated Fat: 11g | Polyunsaturated Fat: 25g | Monounsaturated Fat: 11g | Trans Fat: 0.1g | Cholesterol: 49mg | Sodium: 409mg | Potassium: 78mg | Fiber: 0.4g | Sugar: 2g | Vitamin A: 261IU | Vitamin C: 2mg | Calcium: 253mg | Iron: 0.3mg
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