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Grandma’s Onion Squares

Grandma's Onion Squares: A Comforting Savory Delight

Grandma’s Onion Squares are a comforting dish featuring a buttery crust and savory onion filling. Perfect for gatherings or a cozy night in.
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Prep Time 30 minutes
Cook Time 45 minutes
Cooling Time 10 minutes
Total Time 1 hour 25 minutes
Servings: 12 squares
Course: Appetizers
Cuisine: American
Calories: 250
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Crust
  • 2 cups flour can use gluten-free flour
  • 1 tbsp baking powder
  • 1 tsp salt
  • 1 stick butter softened
For the Filling
  • 2 cups onions thinly sliced, caramelized
  • 8 oz cream cheese
  • 1 cup sour cream
  • 3 large eggs
  • 1 cup cheddar cheese shredded, can substitute mozzarella or Swiss

Equipment

  • 9x13-inch baking dish
  • mixing bowls
  • Skillet

Method
 

Step-by-Step Instructions for Grandma’s Onion Squares
  1. In a medium bowl, whisk together the flour, baking powder, and salt until well combined. Then mix in the softened butter until it resembles coarse crumbs. Press into a greased 9x13-inch baking dish.
  2. Preheat your oven to 350°F (175°C). Bake the prepared crust for about 12-15 minutes until lightly golden and firm to the touch.
  3. Slice onions and caramelize in a skillet with butter over medium heat for about 10-15 minutes until golden brown. Set aside to cool.
  4. In a large bowl, beat together cream cheese and sour cream until smooth. Add eggs and whisk until blended. Stir in cheddar cheese and caramelized onions.
  5. Pour the onion filling over the baked crust, spreading evenly. Bake for an additional 25-30 minutes until filling is set.
  6. Let cool for about 10 minutes before slicing into squares. Serve warm or at room temperature.

Nutrition

Serving: 1squareCalories: 250kcalCarbohydrates: 20gProtein: 6gFat: 18gSaturated Fat: 11gPolyunsaturated Fat: 0.5gMonounsaturated Fat: 5gCholesterol: 50mgSodium: 350mgPotassium: 120mgFiber: 1gSugar: 1gVitamin A: 500IUVitamin C: 2mgCalcium: 150mgIron: 1mg

Notes

For best flavor, caramelize onions slowly. You can prepare the squares a day in advance and store in the fridge. Reheat in the oven for crispiness.

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