Caramelized Onion Tartines

Slow-cooked onions bring out their natural sweetness, making them perfect for a simple yet satisfying lunch on toasted bread.

Prep Time

15 minutes

Total Time

45 minutes

Calories

425 kcal

Difficulty

Easy

Equipment

3 items

Cost

£1.51/serving

Season:

☀️ Summer

Meal Type:

Breakfast•Lunch•Dessert•Bread

Cuisine:

British

Main Ingredient:

Vegetarian

Cooking Style:

Quick & Easy•Slow Cooker•Baking

Occasion:

Weeknight Dinner

Mood:

Light & Fresh

Ingredients

Servings

3largeYellow Onions(thinly sliced)

£1.00

2tablespoonsOlive Oil(extra virgin)

£0.20

1tablespoonButter(unsalted)

£0.15

1teaspoonFresh Thyme(leaves only)

£0.30

1tablespoonBalsamic Vinegar(optional, for a touch of tang)

£0.10

0.5teaspoonSalt(or to taste)

£0.01

0.3teaspoonBlack Pepper(freshly ground, or to taste)

£0.02

4slicesBread(sourdough or baguette, toasted)

£0.50

4ouncesGoat Cheese(optional, for topping)

£2.75

1cupFresh Arugula(optional, for topping)

£1.00

Total Cost

£6.03

£1.51 per serving

Instructions

1.
Heat olive oil and butter in a large skillet over medium-low heat. Add sliced onions and thyme.
2.
Cook, stirring occasionally, for about 20-30 minutes, or until the onions are very soft, golden brown, and caramelized. Adjust the heat as needed to prevent burning.
3.
If using, stir in balsamic vinegar during the last 5 minutes of cooking.
4.
Season with salt and pepper to taste.
5.
Toast the bread slices.
6.
Divide the caramelized onions evenly among the toasted bread slices.
7.
Top with goat cheese and fresh arugula, if desired.
8.
Serve immediately.

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My Notes

Nutrition Information

Nutrition per serving (200g)

425 kcal / 1778 kJ

Carbs

44g

17% of RDA

Fat

22g

31% of RDA

Protein

15g

30% of RDA

Detailed Breakdown

Fibre

5 g

17% of RDA

Sugar

17 g

19% of RDA

Sodium

550 mg

24% of RDA

Saturated Fat

8 g

40% of RDA

Chef's Tips

Low and slow cooking is key for caramelized onions. Don't rush the process.

Adding a pinch of sugar can enhance the caramelization, but it's usually not necessary.

Store leftover caramelized onions in the refrigerator for up to 3 days.

Try other toppings such as prosciutto, roasted red peppers, or a fried egg.

Cooking Equipment

Oven

Stove

Large skillet

Wine Pairings

No wine pairing suggestions available for this recipe.

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