Whole Baked Onions with Filling

A white bowl containing baked onions topped with chili flakes and spices, served with two slices of bread.

Looking for a flavorful side dish that’s simple to make? These TikTok viral whole baked onions are stuffed with a savory filling that melts perfectly as they roast. Using sweet Vidalia onions makes each bite tender and delicious. Serve them as a roasted onion side for any meal.

Course Appetizer, Side Dish, Sides, Snack, Snacks

Cuisine American, International

Keyword baked onion, baking dish, caramelized, drizzle, onion, onion recipe, peel, roast, roasted onion, seasoning, side dish, sweet onions, vidalia, yellow onions

Prep Time 5

Cook Time 1 10

Broil (optional) 3

Servings Serving

Calories 227kcal

Author Zuzana Paar

Equipment

Ingredients

1 Piece Sweet Onion large
1 teaspoon Chili Onion Crunch
½ teaspoon Garlic minced
½ teaspoon Paprika
½ teaspoon Old Bay
½ teaspoon Cajun Seasoning
½ teaspoon Italian Herb Mix
¼ teaspoon Salt
¼ teaspoon Black Pepper
1 Tablespoon Butter ½ tbsp sliced, ½ tbsp melted

US Customary - Metric

Instructions

Preheat your oven to 375°Fahrenheit (190°Celsius) and grease or line a baking dish. Gather all your ingredients and measure them so everything is ready to go. Keep foil nearby to wrap the onions later.
Peel each onion and slice about a 1-inch opening at the top. Scoop out the center with a small spoon to create a deep well halfway down. Place ½ tablespoon of butter into each hollow for extra flavor.
Melt the remaining butter in a small bowl and stir in chili onion crunch, garlic, paprika, Old Bay, Cajun seasoning, Italian herbs, salt, and pepper. Mix until smooth and evenly combined. Spoon the mixture over the onions, filling the wells and coating the outsides.
Wrap each onion tightly in foil and place them in the prepared baking dish. Bake for 50–60 minutes until fork-tender. For a golden, caramelized finish, unwrap and broil for 2–3 minutes before serving.

Notes

Choose the Right Onion Size: Pick medium to large onions for even cooking and easy stuffing. Smaller onions may cook too quickly and lose their shape.
Prep Carefully: Peel and core the onions gently to avoid breaking them. Keeping the onion intact ensures the filling stays inside during baking.
Use Foil if Needed: Cover the onions with foil for the first part of baking to retain moisture. Remove the foil near the end to let them caramelize and brown slightly.
Check for Doneness: Insert a knife into the onion to test softness before serving. The center should be tender but not mushy for the best texture and taste.

Nutrition