These Baked Beef Stuffed Onions are filled with a savory mixture of seasoned ground beef, rice, garlic, herbs, and tomatoes, then baked in a rich tomato sauce until the onions become sweet, tender, and caramelized. Each onion turns into its own little edible bowl, making this comforting dinner both beautiful and satisfying.
Why You’ll Love It
- Sweet, tender roasted onions filled with hearty seasoned beef
- Rich tomato sauce keeps the filling moist and flavorful
- Beautiful individual portions that are perfect for family dinners
- Easy to prepare ahead and bake when ready
Ingredients Overview
Onions
- 8 medium yellow or sweet onions
- 1 tbsp olive oil
- ½ tsp salt
- ¼ tsp black pepper
Beef Filling
- 1½ lbs ground beef
- 1 cup cooked white rice
- 1 small onion, finely chopped
- 3 garlic cloves, minced
- 1 large egg
- ½ cup diced tomatoes, drained
- 2 tbsp tomato paste
- 2 tbsp fresh parsley, chopped
- 1 tsp Italian seasoning
- 1 tsp smoked paprika
- ½ tsp garlic powder
- 1 tsp salt
- ½ tsp black pepper
Tomato Sauce
- 2 cups crushed tomatoes
- 1 cup tomato sauce
- 2 tbsp tomato paste
- 2 garlic cloves, minced
- 1 tbsp olive oil
- 1 tsp Italian seasoning
- ½ tsp dried oregano
- ½ tsp sugar
- ½ tsp salt
- ¼ tsp black pepper
- ½ cup beef broth
Garnish
- Fresh parsley, chopped
- Fresh basil, optional
- Freshly cracked black pepper
Step-by-Step Instructions
1. Prepare the Onions
Preheat the oven to 375°F (190°C).
Peel the onions and carefully trim a small amount from the top and bottom so they can stand upright.
Bring a large pot of water to a boil.
Add the onions and simmer for 10–12 minutes, until the outer layers begin to soften.
Drain and allow them to cool enough to handle.
2. Hollow the Onions
Using a small spoon or paring knife, carefully remove the inner layers from each onion.
Leave about 2–3 sturdy outer layers intact so each onion forms a cup.
Finely chop some of the removed onion and reserve it for the filling.
3. Prepare the Beef Filling
Heat a skillet over medium heat.
Add the chopped onion and cook for 3–4 minutes until softened.
Add the garlic and cook for another 30 seconds.
Remove from the heat and allow to cool slightly.
In a large bowl, combine ground beef, cooked rice, onion mixture, egg, diced tomatoes, tomato paste, parsley, Italian seasoning, smoked paprika, garlic powder, salt, and black pepper.
Mix gently until evenly combined.
4. Make the Tomato Sauce
Heat olive oil in a saucepan over medium heat.
Add the garlic and cook for about 30 seconds.
Stir in crushed tomatoes, tomato sauce, tomato paste, Italian seasoning, oregano, sugar, salt, black pepper, and beef broth.
Simmer for 8–10 minutes, stirring occasionally.
5. Fill the Onions
Spread about half of the tomato sauce across the bottom of a large baking dish.
Place the hollowed onions upright in the dish.
Spoon the beef mixture generously into each onion, packing it lightly without compressing it too firmly.
6. Add the Sauce
Spoon some additional tomato sauce around the onions and lightly over the tops.
Cover the baking dish tightly with foil.
7. Bake
Bake covered for 45 minutes.
Remove the foil and continue baking for another 20–25 minutes, until the onions are tender and the beef filling reaches an internal temperature of 160°F (71°C).
For deeper caramelization, bake uncovered for an additional 5 minutes if needed.
8. Serve
Remove the stuffed onions from the oven and let them rest for about 5–10 minutes.
Spoon some of the rich tomato sauce from the baking dish around each onion.
Finish with fresh parsley, basil if desired, and cracked black pepper.
Serve warm.
Cooking Tips
- Choose onions of similar size so they cook evenly.
- Do not hollow the onions too thinly or they may collapse during baking.
- Cook the rice before adding it to the filling for the best texture.
- Mix the beef gently so the filling stays tender rather than dense.
- Keep the dish covered during most of the baking time so the onions soften properly.
- Allow the stuffed onions to rest briefly before serving so the filling stays intact.
Serving Suggestions
Serve these beef stuffed onions with:
- Creamy mashed potatoes
- Garlic bread
- Roasted vegetables
- Buttered rice
- Fresh green salad
- Parmesan roasted potatoes
Storage
Store leftover stuffed onions and tomato sauce together in an airtight container in the refrigerator for up to 4 days.
Reheat covered in a 350°F (175°C) oven until hot, or microwave individual portions with extra tomato sauce.
Leftover Ideas
- Chop leftover stuffed onions and serve them over rice.
- Turn leftovers into a hearty beef and onion pasta sauce.
- Serve the filling inside baked potatoes.
- Add mozzarella on top and rebake for a cheesy variation.
FAQs
Can I use ground turkey instead of beef?
Yes. Ground turkey or chicken can be substituted using the same seasonings.
Can I make these ahead of time?
Yes. Assemble the onions up to 24 hours ahead, cover, refrigerate, and bake when ready.
Can I add cheese?
Yes. Mozzarella, Parmesan, or provolone can be sprinkled over the tops during the final 10 minutes of baking.
Can I use brown rice?
Yes. Brown rice, quinoa, or cauliflower rice can all be used instead.
Final Thoughts
Baked Beef Stuffed Onions in Tomato Sauce combine sweet roasted onions, savory beef and rice filling, garlic, herbs, and rich tomato sauce in one hearty homemade meal. Beautiful enough for entertaining yet comforting enough for a family dinner, these stuffed onions are a flavorful twist on classic stuffed vegetables.
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