Caramelized Onion and Gruyère Tart with Arugula
A French-inspired tart with sweet caramelized onions, creamy Gruyère cheese, and peppery arugula for a refined, elegant dish. This French-inspired pasta recipe, ready in about 50 minutes, layers puff pastry, onions, butter into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 360 calories and feeds 6, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1 sheet (14 oz) puff pastry
- 2 large, thinly sliced onions
- 2 tbsp butter
- 1 tbsp sugar
- 1 cup, grated Gruyère cheese
- 4 oz, washed arugula
- 1/2 tsp salt
- 1/4 tsp pepper
- 1 tbsp Dijon mustard
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Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Preheat oven to 400°F. Roll out pastry on a floured surface, then transfer to a baking sheet. Trim edges and prick with a fork.
- Step 2: In a skillet, cook onions with butter and sugar over low heat for 20-25 minutes until golden and caramelized. Mix in Gruyère, 1/4 tsp salt, and 1/8 tsp pepper.
- Step 3: Spread onion mixture over pastry, leaving a 1-inch border. Fold edges into a rim, then brush with Dijon mustard. Bake for 20-25 minutes until golden and bubbly.
- Step 4: Let cool 5 minutes, then top with arugula and a drizzle of olive oil before serving.
