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Baked Onion

This Baked Onion Recipe transforms sweet onions into a comforting dish with caramelized sweetness and silky texture, making it perfect for any family dinner or celebration.
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Course Appetizer, Side Dish
Cuisine American
Servings 4 servings
Calories 150 kcal

Ingredients
  

Main Ingredients

  • 4 large sweet onions (Vidalia or Walla Walla) peeled, root end trimmed but left intact
  • 3 tablespoons olive oil coats and crisps the edges
  • 2 tablespoons unsalted butter adds richness and sheen
  • 1 teaspoon kosher salt brings out the onion’s natural sweetness
  • 1/2 teaspoon freshly ground black pepper lively background note
  • 1 tablespoon fresh thyme leaves or 1 teaspoon dried for aromatic lift
  • 1/4 cup grated Parmesan or nutritional yeast adds a cheesy finish without dairy if using nutritional yeast
  • 1/2 cup vegetable or chicken broth helps steam and caramelize the centers
  • 1 teaspoon honey or maple syrup optional for extra glaze
  • smoked dash paprika optional for depth

Substitutions

  • 1 serving vegan butter or extra olive oil use for dairy-free
  • 1 serving pecorino or breadcrumbs substitute for Parmesan
  • 1 serving water can be used instead of broth, though broth adds depth

Instructions
 

Preparation

  • Preheat your oven to 400°F (200°C) and arrange a shallow baking dish for the onions.
  • Trim the onions by slicing a thin layer off the top, keeping the root intact.
  • Mix olive oil, melted butter, salt, pepper, thyme, and honey (if using) in a small bowl and brush over the onions.
  • Place the onions in the baking dish, pour the broth into the bottom, and sprinkle Parmesan or nutritional yeast on top.

Cooking

  • Cover tightly with foil and bake for 25 minutes.
  • Remove the foil and roast for an additional 10–20 minutes until the tops are golden and centers are soft.
  • Let cool slightly before serving, and spoon pan juices over the onions before plating.

Notes

For variations, add roasted garlic, drizzle with balsamic reduction, or turn into a main dish by stuffing. Store leftovers in the fridge for up to 4 days or freeze for 2 months. Reheat gently in a low oven.
Keyword baked onion, Caramelized Onions, Comfort Food, Easy Side Dish, Vegetarian Recipe