3 Ingredient Vidalia Onion Dip
3 Ingredient Vidalia Onion Dip is a creamy, flavorful appetizer made with sweet Vidalia onions, sour cream, and mayonnaise. With just three simple ingredients, this easy dip is perfect for serving with potato chips, crackers, fresh vegetables, or at parties and game-day gatherings.
Equipment
- Cutting board
- Sharp knife
- Box grater, if shredding cheese
- Measuring cups
- Large mixing bowl
- Wooden spoon or rubber spatula
- 1-quart baking dish or 9-inch pie plate
- Nonstick cooking spray
- Serving spoon
Ingredients
For the Dip
- 2 cups finely diced Vidalia onion
- 1 cup mayonnaise
- 2 cups freshly shredded Swiss cheese divided
Optional Items for Serving
- Crackers
- Toasted baguette slices
- Pretzel crisps
- Tortilla chips
- Carrot sticks
- Celery sticks
- Bell pepper strips
Instructions
Step 1: Preheat the Oven
- Preheat the oven to 350°F.
- Lightly coat a 1-quart baking dish or 9-inch pie plate with nonstick cooking spray.
Step 2: Prepare the Onion
- Peel the Vidalia onion and cut it into small pieces.
- Measure 2 cups of diced onion. Finely chopped onion cooks more evenly and makes the finished dip easier to scoop.
Step 3: Shred the Cheese
- Shred the Swiss cheese from a block.
- Set aside about 1/2 cup for the topping. Freshly shredded cheese usually melts more smoothly than packaged shredded cheese.
Step 4: Combine the Ingredients
- Add the diced onion, mayonnaise, and remaining 1 1/2 cups of Swiss cheese to a large mixing bowl.
- Stir until the onion is evenly coated and the cheese is well distributed.
Step 5: Transfer to the Baking Dish
- Spoon the mixture into the prepared baking dish.
- Spread it into an even layer, making sure the thickness is similar from the center to the edges.
Step 6: Add the Cheese Topping
- Sprinkle the reserved 1/2 cup of Swiss cheese evenly over the top.
- This layer will melt and become lightly golden during baking.
Step 7: Bake the Dip
- Place the baking dish in the preheated oven.
- Bake uncovered for 30 to 35 minutes, or until the edges are bubbling and the onions are tender.
Step 8: Brown the Top if Needed
- If the cheese is melted but not browned, turn on the broiler for 1 to 2 minutes.
- Watch the dip closely because the top can darken quickly.
Step 9: Let the Dip Rest
- Remove the dip from the oven and let it rest for 5 to 10 minutes.
- The dip will be extremely hot and slightly loose when it first comes out. Resting allows it to thicken and makes it easier to serve.
Step 10: Serve
- Serve the dip warm with crackers, bread, chips, or vegetables.
- Stir it gently before serving if a little oil has collected around the edges.