Cheesy Baked Onions

Featured in Savory Side Dishes.

Sweet onions are layered and baked in cream, mozzarella, and Parmesan cheese until tender and bubbly. This Southern side dish pairs perfectly with grilled meats.
Ranah
Updated on Fri, 17 Jan 2025 16:36:00 GMT
A close-up image of stacked, caramelized onion rings garnished with herbs. Pin it
A close-up image of stacked, caramelized onion rings garnished with herbs. | bakeitgood.com

Southern Comfort on a Plate

After years of testing this Tennessee Onions recipe is pure magic in my kitchen. The sweet onions melt into a rich cheesy sauce creating something so incredible you'll forget it's just a side dish.

A close-up of beautifully roasted onions arranged in a spiral pattern, garnished with herbs. Pin it
A close-up of beautifully roasted onions arranged in a spiral pattern, garnished with herbs. | bakeitgood.com

Why This Recipe Works

The beauty here is in its simplicity. Once those onions get all tender and the cheese turns golden brown you've got something that steals the show every time. Even onion skeptics come back for seconds.

Ingredients You’ll Need

  • Sweet Onions: Vidalia onions are the gold standard for their natural sweetness, but Walla Walla or even Maui onions work too.
  • Heavy Cream: Adds richness and binds everything together.
  • Mozzarella and Parmesan: The ultimate duo for creamy and tangy layers.
  • Butter: For that luscious flavor and a perfect golden finish.
  • Garlic Powder and Smoked Paprika: Subtle yet transformative spices that elevate every bite.
  • Fresh Parsley: A sprinkle for freshness and a burst of color.

Step-by-Step Instructions

Prepare the Ingredients
Peel and slice your onions evenly to ensure they cook at the same rate. Gather your spices, cheese, and cream for easy assembly.
Layering Perfection
In a greased baking dish, alternate layers of onions, cheese, and cream mixture for even flavor distribution.
Bake to Perfection
Cover with foil and bake at 375°F for 30 minutes. Remove the foil and bake another 15 minutes until bubbly and golden.
Rest and Serve
Let the dish sit for 5 minutes to settle the layers, then sprinkle with parsley for a picture-perfect finish.

Pro Tips for Success

Thinly slice your onions for faster cooking and better layering. If your onions are particularly juicy, pat them dry with a paper towel before layering to avoid a watery dish.

Flavor Variations

Add crumbled bacon for a smoky twist, or use Gruyere cheese for a nuttier flavor. For spice lovers, sprinkle in some red pepper flakes or a dash of hot sauce.

Best Pairings

Tennessee Onions shine alongside grilled steaks, roasted chicken, or barbecue ribs. For a vegetarian meal, pair it with garlic bread and a crisp green salad.

A close-up image of beautifully roasted spiral-cut onions garnished with fresh thyme. Pin it
A close-up image of beautifully roasted spiral-cut onions garnished with fresh thyme. | bakeitgood.com

Storage and Reheating

Store leftovers in an airtight container in the fridge for up to three days. Reheat in the oven at 350°F until warmed through for the best results.

Make It Ahead

Prepare the dish up to the baking step and refrigerate overnight. Add an extra 10-15 minutes of bake time when cooking straight from the fridge.

Why You'll Love This Recipe

This dish transforms humble onions into a luxurious side that's perfect for any occasion. It's comforting, crowd-pleasing, and so simple to make.

Gourmet Touches

For an elevated presentation, layer caramelized onions with the raw slices for added depth. A sprinkle of truffle oil before serving adds a luxurious touch.

Freezing Instructions

This dish freezes wonderfully. Assemble it in a foil pan, cover tightly, and freeze for up to three months. Bake directly from frozen at 375°F for an hour.

A Crowd Favorite

Whenever I bring this dish to potlucks, it’s always the first to disappear. People are always amazed that something so simple can taste so decadent.

Frequently Asked Questions

→ What type of onions work best?
Sweet onions like Vidalia or Walla Walla are ideal for their mild, sweet flavor. Yellow onions can work as a substitute but will have a stronger taste.
→ Can I make this ahead?
Yes, assemble the dish a day ahead and refrigerate. When ready to serve, bake according to the recipe instructions.
→ What should I serve with Tennessee Onions?
They pair perfectly with grilled steaks, chicken, or pork. Also great alongside mashed potatoes or on crusty bread.
→ Can I use different cheeses?
Yes, try Gruyere or sharp cheddar for different flavor profiles. Just ensure one cheese is good for melting.
→ Why cover with foil while baking?
Foil helps the onions steam and become tender. Removing it for the final cooking time allows the cheese to brown and bubble.

Tennessee Onions

Sweet onions baked in cream and two cheeses until tender and golden. A Southern favorite side dish perfect for steaks and grilled meats.

Prep Time
15 Minutes
Cook Time
50 Minutes
Total Time
65 Minutes
By: Seham

Category: Perfect Sides

Difficulty: Easy

Cuisine: American

Yield: 8 Servings (1 casserole)

Dietary: Low-Carb, Vegetarian, Gluten-Free

Ingredients

01 3 large sweet onions (1.5 lbs), sliced ½-inch thick.
02 1 cup heavy cream.
03 1½ cups shredded mozzarella cheese.
04 1½ cups shredded Parmesan cheese.
05 1 tsp garlic powder.
06 ½ tsp smoked paprika.
07 ½ tsp salt.
08 ¼ tsp black pepper.
09 2 tbsp unsalted butter, cut small.
10 Fresh parsley for garnish (optional).

Instructions

Step 01

Preheat oven to 375°F. Grease 9x13-inch baking dish.

Step 02

Arrange onion slices in dish, slightly overlapping.

Step 03

Mix cream, garlic powder, paprika, salt, and pepper.

Step 04

Pour cream mixture over onions. Top with cheeses and butter pieces.

Step 05

Cover with foil, bake 25 minutes. Uncover, bake 20-25 more minutes until golden.

Step 06

Rest 5 minutes. Garnish with parsley if desired.

Notes

  1. Vidalia or Walla Walla onions work best.
  2. Can substitute different cheeses.
  3. Can be assembled ahead and refrigerated.

Tools You'll Need

  • 9x13-inch baking dish.
  • Aluminum foil.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Dairy (cream, cheese).

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 320
  • Total Fat: 28 g
  • Total Carbohydrate: 12 g
  • Protein: 10 g