Caramelized Onion and Gruyere Tartlets with Balsamic Glaze

Delicious mini tartlets filled with sweet caramelized onions and savory Gruyere cheese, baked in a flaky crust. A touch of balsamic glaze adds a delightful sweetness.

Prep Time

20 minutes

Total Time

45 minutes

Calories

105

Level

Easy

Yields

12 servings

Cost

£0.59

Season:

Meal Type:

Cuisine:

Cooking Style:

Mood:

Ingredients

Servings

12countFrozen Mini Tartlet Shells(Pre-made and thawed)

£2.50

2mediumYellow Onions(Thinly sliced)

£0.60

4ozGruyere Cheese(Shredded)

£2.75

2tablespoonsButter(Unsalted)

£0.25

1tablespoonOlive Oil(Extra virgin)

£0.15

1teaspoonBrown Sugar(Packed)

£0.02

2tablespoonsBalsamic Glaze(For drizzling)

£0.30

1teaspoonFresh Thyme(Chopped, optional)

£0.50

0.3teaspoonSalt(Or to taste)

0.3teaspoonBlack Pepper(Freshly ground, or to taste)

Total Cost

£7.07

£0.59 per serving

The Method

1
Preheat oven to 375°F (190°C).
2
In a medium skillet, melt butter and olive oil over medium heat. Add sliced onions and cook, stirring occasionally, until softened and translucent, about 10 minutes.
3
Reduce heat to low and continue cooking, stirring frequently, until the onions are deeply caramelized and golden brown, about 20-25 minutes. Stir in brown sugar, salt, pepper and thyme (if using) during the last 5 minutes of cooking.
4
Remove skillet from heat and let cool slightly.
5
Sprinkle a small amount of shredded Gruyere cheese into the bottom of each mini tartlet shell.
6
Spoon caramelized onions evenly into the tartlet shells, filling them almost to the top.
7
Top with the remaining shredded Gruyere cheese.
8
Bake in the preheated oven for 12-15 minutes, or until the crust is golden brown and the cheese is melted and bubbly.
9
Remove from oven and let cool slightly before serving.
10
Drizzle with balsamic glaze before serving.

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My Notes

Nutrition Information

Nutrition per serving (25g)

105 kcal / 439 kJ

Carbs

3% of RDA

Fat

7.5g

11% of RDA

Protein

3.5g

7% of RDA

Detailed Breakdown

Fibre

0.4 g

1% of RDA

Sugar

2.5 g

3% of RDA

Sodium

95 mg

4% of RDA

Saturated Fat

4.5 g

23% of RDA

Chef's Tips

For a richer flavor, add a splash of balsamic vinegar to the onions during the last few minutes of caramelization.

You can use other types of cheese, such as Emmental or Comte, if Gruyere is not available.

These tartlets can be made ahead of time and reheated before serving. Reheat in a 350°F (175°C) oven for 5-7 minutes.

Add a pinch of red pepper flakes for a little heat.

Cooking Equipment

Oven

Stovetop

12-cup mini muffin tin

Medium skillet

Wine Pairings

No wine pairing suggestions available for this recipe.

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