How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Onion Tart With Arugula And Prosciutto?

You need 13 ingredients. The key ingredients include: 1 tablespoon olive oil, 2 tablespoons butter chopped, 4 red onions thinly sliced, 1 lemon peel finely grated and lemon juiced, and more.

Is Onion Tart With Arugula And Prosciutto suitable as baking & desserts?

Yes, Onion Tart With Arugula And Prosciutto falls under the Baking & Desserts category and is a great choice for this type of meal.

How do I store leftover Onion Tart With Arugula And Prosciutto?

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

Onion Tart With Arugula And Prosciutto Recipe

Name: Onion Tart With Arugula And Prosciutto
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 tablespoon olive oil; 2 tablespoons butter chopped; 4 red onions thinly sliced; 1 lemon peel finely grated and lemon juiced; 5 sprigs thyme; 1/4 cup brown sugar packed; 1/2 cup red wine; 1 sheet frozen puff pastry thawed; 1 egg yolk beaten; 1 cup cherry tomatoes; 1 cup crumbled feta cheese; 2 slices prosciutto grilled, torn; baby arugula to serve

Bake this irresistible Onion Tart With Arugula And Prosciutto at home. Made with olive oil, butter, red onions and lemon. Easy step-by-step instructions…

This Onion Tart With Arugula And Prosciutto relies on simple, everyday ingredients such as olive oil, butter chopped, red onions thinly sliced and sprigs thyme. It comes together quickly and makes 4 servings, at about 349 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Onion Tart With Arugula And Prosciutto delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.

Updated Jun 30, 2026

Serves 4 Baking & Desserts

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Onion Tart With Arugula And Prosciutto

Tips for the best results

Variations & substitutions

My Personal Notes

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