If you’re looking for a dish that embodies Southern comfort with a gourmet twist, this bacon Onion  is a must-try. A flaky pie crust forms the foundation for a deeply flavorful filling of sweet caramelized onions, smoky bacon, and fresh tomatoes. Topped with a creamy cheese mixture, this savory pie delivers a satisfying contrast of textures and rich, tangy notes in every slice.

Perfect for brunch, a light supper, or a crowd-pleasing potluck contribution, this pie offers that comforting familiarity of baked casseroles with a refined edge. The interplay of savory and slightly sweet ingredients wrapped in a buttery crust makes each bite as comforting as it is indulgent.

While this dish shines on its own, it also pairs wonderfully with a crisp green salad or a chilled glass of white wine. And the best part? It uses basic pantry staples and comes together with minimal fuss.

Bake it ahead and enjoy it warm or at room temperature—either way, it’s bound to be a hit.

Servings and timing:
Yield: 1 pie (6–8 servings)
Prep Time: 15 minutes
Cook Time: 45 minutes
Total Time: 1 hour

Ingredients :

• • 1 deep-dish pie crust (store-bought or homemade), pre-baked
  • 6–8 slices thick-cut bacon, cooked and crumbled
  • 1 large yellow onion, thinly sliced
  • 2 medium tomatoes, thinly sliced
  • 1½ cups shredded mozzarella cheese
  • ½ cup mayonnaise
  • ½ cup sour cream
  • 1 tablespoon all-purpose flour
  • ½ teaspoon garlic powder
  • ¼ teaspoon black pepper
  • ¼ teaspoon salt
  • 1 tablespoon chopped fresh chives or parsley (optional)

Instructions:

Instructions:

1. Preheat the Oven
   Set your oven to 350°F (175°C).
2. Caramelize the Onions
   In a skillet over medium heat, cook sliced onions in a spoonful of drippings until soft and golden, about 10 minutes. Set aside to cool slightly.
3. Layer the
   In the pre-baked crust, layer half the caramelized onions, followed by half the tomato slices and half the crumbled bacon. Repeat with remaining onions, tomatoes, and bacon.
4. Prepare the Topping
   In a small bowl, mix together mozzarella cheese, mayonnaise, sour cream, flour, garlic powder, salt, and pepper until well blended.
5. Top and Bake
   Spread the cheese mixture evenly over the layered filling. Place the pie on a baking sheet and bake for 35–40 minutes, or until the top is golden brown and bubbly.
6. Cool and Garnish
   Allow to rest for a few minutes before slicing. Garnish with fresh chives or parsley if desired.

Variations :

• Substitute Gruyère or sharp cheddar for mozzarella for a more complex flavor.
• Add a handful of baby spinach to the layers for a green twist.
• For a spicier version, include a few slices of jalapeño or a dash of hot sauce in the topping.

Tips :

• Pre-roast tomato slices on a paper towel-lined baking sheet at 375°F for 10 minutes to reduce excess moisture and keep the crust from getting soggy.
• Let the pie rest for at least 10 minutes after baking for easier slicing.
• Use a glass pie dish to better monitor the bottom crust for even browning.