This delicious, easy baked onion cheese dip is great for a last minute appetizer. You guuuuyyyyssss, it’s SO good, I almost ate the whole pan myself! Serve it with tortilla chips, fresh bread, or pita chips.
Five different cheeses go into this fabulous hot onion dip, and there is no such thing as too much cheese!
Ok, awhile back a darling reader reached out to me and shared her baked onion cheese dip which I’ve been holding onto to try. The problem is, I can’t remember her name!! So, if this recipe was from you and you DM’d it to me on Instagram:
- Tell me who you are!
- THIS IS THE BEST DIP!!
I adjusted things a bit to my family’s likes but my goodness, you weren’t kidding, this dip is everything.
Before You Begin…
Slice up the onion and get them caramelizing and then pull out all your cheeses to prep. The cream cheese needs to be softened, so get that out on the counter so it can come to room temperature. You’ll also want to grate the parmesan, Swiss and sharp cheddar cheeses yourself if you can. Pre-shredded cheese doesn’t melt as well as cheese you grate yourself. The Mexican blend will always be a pre-shredded bag.
The Secret to Onion Dip
Do not just throw those onions in there, caramelize them first! And in fact, if you want to really make your caramelized onions top notch throw in a little Worcestershire sauce. It adds a depth of flavor to those onions that you will love!
What Do I Need for Baked Onion Cheese Dip?
You will need cheese, cheese and more cheese!! Grab a sweet onion, a few simple ingredients and you’re on your way! Here is what you will need:
- Onions: Sweet Onion, Butter, Worcestershire Sauce
- Cheeses: Cream Cheese, Swiss Cheese, Sharp Cheddar Cheese, Parmesan Cheese, Mexican Blend Cheese
- Dip: Mayonnaise, Sour Cream
- Seasonings: Salt, Pepper, Herbs (thyme and chopped chives)
Keep scrolling to see the complete recipe card with all the measurements for each ingredient.
How to Make Cheesy Onion Baked Dip
- Caramelize Onions: Preheat a cast iron skillet on the stove and add the butter to melt, then add the onions that let them get tender. Season them with a little salt and let them cook. Add Worcestershire sauce and allow the onions to caramelize stirring every few minutes.
- Combine: Add all the dip ingredients to a mixing bowl including the caramelized onions and blend together until smooth.
- Bake: Spread the dip into the same cast iron skillet and smooth it out. Bake until heated through and golden brown on top.
- Serve: Sprinkle the top with fresh herbs and serve with toasted sourdough bread slices, tortilla chips, crackers, or pita chips.
The complete instructions for making this dip can be found in the recipe card at the end of the post. You can also print and/or save the recipe there.
Variations and Substitutions
If you want to change things up a little with this cream cheese dip, you could add jalapenos for some heat. You could use fresh minced jalapenos or canned jalapenos depending on what flavor you’re after.
Other optional add-ins are spinach (frozen that has been thawed and all moisture squeezed out), artichoke hearts, a dash of cayenne or a splash of hot sauce.
You can also swap out the cheese for cheeses you love or use a white or yellow onion for the sweet onion.
- Don’t use low fat or fat free products in this recipe.
- If you can find a block of cheese, shred the cheese yourself. It will melt way better.
Storage and Reheating
Store in an airtight container in the refrigerator for up to 5 days. You can reheat the dip in the microwave or in the oven if you want to keep that golden delicious top on the dip.
Whether it’s game day, New Years Eve or you just having some friends over for appetizers and games, this baked cheesy onion dip will be the talk of the party! It’s low carb and high protein too!
More Creamy Cheese Dip Recipes to Try:
- Chili Con Queso Dip
- Artichoke Dip
- Slow Cooker Sausage Dip
- Buffalo Chicken Dip
- Cranberry Cream Cheese Dip
- Chorizo Dip Queso Fundido
Baked Cheese and Onion Dip
- 1 Sweet Onion, extra large, sliced
- 1 Tablespoon Butter
- 1 Teaspoon Worcestershire Sauce
- 1 Brick Cream Cheese, 8oz, softened
- 1 Cup Mayonnaise
- 1/2 Cup Sour Cream
- 2 Cups Swiss Cheese, shredded (8 oz package)
- 2 Cups Sharp Cheddar Cheese, shredded (8 oz package)
- 1 1/2 Cups Parmesan Cheese, shredded (6 oz package)
- 1 Package Mexican Blend Cheese, 8oz, shredded
- Salt and Pepper
- Herbs for garnish, we prefer thyme and chopped chives, they make all the difference!
- Heat a large cast iron or stainless steel pan over medium heat.
- Add the butter, and once melted add the sliced onions, stirring to coat. Add a pinch of salt and allow to cook for 5 minutes, stir and repeat after another 3-5 minutes to keep the onions from sticking.1 Tablespoon Butter, 1 Sweet Onion
- Add the worcestershire sauce and stir again every few minutes until golden in color, about 15-20 minutes total. Set aside.1 Teaspoon Worcestershire Sauce
- In a large bowl, beat the cream cheese, using a handmixer until smooth and creamy. Add the mayonnaise and sour cream, cheeses, onions and a pinch of salt and pepper. Beat again until smooth and pour back into the onion pan. If your pan isn't oven proof, use a casserole dish.1 Brick Cream Cheese, 1 Cup Mayonnaise, 1/2 Cup Sour Cream, 2 Cups Swiss Cheese, 2 Cups Sharp Cheddar Cheese, 1 1/2 Cups Parmesan Cheese, 1 Package Mexican Blend Cheese, Salt and Pepper
- Bake at 350 for approximately 35 minutes or until golden brown. Set aside once baked and sprinkle with fresh herbs.Herbs for garnish, we prefer thyme and chopped chives, they make all the difference!
- Slice sourdough bread and drizzle with olive oil, then lay evenly on a sheet pan. Turn the oven to broil and toast one or both sides of the bread. Serve with the dip along with crackers and chips if desired.