Blue Cheese and Caramelized-Onion Squares
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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These blue cheese and caramelised onion squares offer a sophisticated balance of flavours, combining the deep sweetness of slow-cooked onions with the sharp, salty punch of melted blue cheese. Built on a simple, light olive oil crust, this vegetarian dish is an excellent alternative to traditional pizza or puff pastry tarts. The addition of fresh rosemary provides a fragrant, woody undertone that cuts through the richness of the cheese, making every bite feel indulgent yet balanced.
Perfect as a savoury snack, a light lunch served with a crisp green salad, or sliced into smaller portions for party canapés, this recipe is remarkably versatile. The homemade dough is quick to prepare and requires no proving, making it an ideal choice for effortless entertaining. Whether served warm from the oven or at room temperature, these squares are a reliable crowd-pleaser for any occasion.
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Ingredients for Blue Cheese and Caramelized-Onion Squares
250g plain flour
2 teaspoons baking powder
3/4 teaspoons salt
180ml whole milk
60ml olive oil
2 tablespoons (1/4 stick) unsalted butter, melted
2 tablespoons (1/4 stick) unsalted butter
2 tablespoons olive oil
3 large onions (about 900g ), halved, thinly sliced
1 tablespoon finely chopped fresh rosemary
1 teaspoon sugar
1/2 teaspoons salt
170g (about 170g ) crumbled blue cheese
How to make Blue Cheese and Caramelized-Onion Squares
Preheat oven to 218°C. Mix flour, baking powder, and salt in medium bowl to blend. Make well in centre of dry ingredients. Whisk milk, olive oil, and melted butter in liquid measuring cup to blend. Slowly pour milk mixture into well in dry ingredients, stirring until just blended and smooth. Roll out dough on lightly floured surface to 10x13-inch rectangle. Transfer dough to rimmed baking sheet. Re-form dough into 10x13-inch rectangle (dough will shrink when moved). Pierce dough all over with fork. Let dough rest while preparing topping.
Melt butter with oil in large skillet over high heat. Add onions. Cook until onions are soft and beginning to brown, stirring frequently, about 10 minutes. Add rosemary, sugar, and salt. Season onions to taste with pepper. Reduce heat to medium. Continue to cook until onions are soft and dark brown, stirring frequently, about 20 minutes; cool.
Spread onion mixture evenly over dough. Sprinkle with cheese. Bake until crust is golden and cheese is bubbling, about 20 minutes. Let cool. Cut into squares and serve.
Clause de non-responsabilité
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Historique de l'article
Les informations contenues dans cette page ont été évaluées par des cliniciens qualifiés.
17 janvier 2026 | Publié à l'origine
Auteur: :
UK recipe editors
Examiné par des pairs
UK recipe editors

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