Grandma’s Onion Squares

Total Time

Prep: 40 min. Bake: 35 min.


9 servings

Updated: Feb. 24, 2023
My grandma brought this recipe with her when she emigrated from Italy as a young wife and mother. It is still a family favorite. —Janet Eddy, Stockton, California
Grandma’s Onion Squares Recipe photo by Taste of Home


  • 2 tablespoons olive oil
  • 2 cups sliced onions
  • 1 teaspoon salt, divided
  • 1/4 teaspoon pepper
  • 2 cups all-purpose flour
  • 3 teaspoons baking powder
  • 5 tablespoons shortening
  • 2/3 cup 2% milk
  • 1 large egg, room temperature
  • 3/4 cup sour cream


  1. Preheat oven to 400°. In a large skillet, heat oil over medium heat. Add onions; cook and stir until softened, 8-10 minutes. Reduce heat to medium-low; cook until deep golden brown, 30-40 minutes, stirring occasionally. Stir in 1/2 teaspoon salt and the pepper.
  2. Meanwhile, in a large bowl, combine flour, baking powder and remaining 1/2 teaspoon salt. Cut in shortening until mixture resembles coarse crumbs. Stir in milk just until moistened. Press into a greased 9-in. square baking pan; top with onions.
  3. Combine egg and sour cream; spread over onion layer. Bake until golden brown, 35-40 minutes. Cut into squares. Serve warm.

Nutrition Facts

1 piece: 256 calories, 15g fat (5g saturated fat), 27mg cholesterol, 447mg sodium, 25g carbohydrate (3g sugars, 1g fiber), 5g protein.