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Grandma’s Onion Squares Recipe

Grandma’s Onion Squares Recipe

4.6 from 10 reviews

Grandma’s Onion Squares are a delightful savory appetizer or side dish featuring a buttery crust topped with a luscious blend of caramelized onions, sour cream, and Parmesan cheese. These vintage-inspired squares are easy to make and perfect for gatherings.

Ingredients

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Dough:

  • 1 sheet refrigerated crescent roll dough

Onion Topping:

  • 2 tablespoons unsalted butter
  • 2 tablespoons olive oil
  • 2 large yellow onions (thinly sliced)
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon dried thyme
  • 1 teaspoon sugar
  • 1/2 cup sour cream
  • 1/2 cup grated Parmesan cheese
  • 1 tablespoon chopped fresh parsley (optional)

Instructions

  1. Preheat the oven: Preheat oven to 375°F and grease a 9×13-inch baking dish.
  2. Prepare the crust: Unroll crescent roll dough and press into the dish to form a crust.
  3. Caramelize onions: In a skillet, cook onions with butter, olive oil, salt, pepper, thyme, and sugar until golden brown.
  4. Combine ingredients: Remove from heat, cool slightly, then mix in sour cream and Parmesan cheese.
  5. Assemble and bake: Spread the onion mixture over the crust and bake for 18–22 minutes until set.
  6. Serve: Cool, cut into squares, and garnish with parsley if desired.

Notes

  • These squares are great for parties or as a side dish.
  • For enhanced flavor, use pre-made caramelized onions.
  • Store leftovers in the fridge and reheat in the oven for best results.

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