The blooming onion in jar cooking cooks in 5 minutes in the microwave, sealed in the jar and seasoned with oil, salt, and balsamic vinegar. A side dish that can be prepared well in advance. It lasts 10 days in the refrigerator, thanks to the vacuum formed in the jar. A really quick and easy recipe, like the red onions in jar cooking and the onion soup in jar cooking. The blooming onion recipe is great to serve with a good roast or a rich cheese board. The blooming onion cooked in a jar in the microwave is perfect for impressing friends and, of course, for those who love onions, in all its versions.
I often prepare the blooming onion in jar cooking and pair it with these recipes:

- Difficulty: Very Easy
- Cost: Very Economical
- Rest time: 20 Minutes
- Preparation time: 5 Minutes
- Portions: 1-2 people
- Cooking methods: Microwave
- Cuisine: Italian
- Seasonality: All Seasons
- Energy 140.06 (Kcal)
- Carbohydrates 13.70 (g) of which sugars 6.80 (g)
- Proteins 1.48 (g)
- Fat 9.47 (g) of which saturated 1.39 (g)of which unsaturated 0.05 (g)
- Fibers 2.25 (g)
- Sodium 201.19 (mg)
Indicative values for a portion of 125 g processed in an automated way starting from the nutritional information available on the CREA* and FoodData Central** databases. It is not food and / or nutritional advice.
* CREATES Food and Nutrition Research Center: https://www.crea.gov.it/alimenti-e-nutrizione https://www.alimentinutrizione.it ** U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2019. https://fdc.nal.usda.gov
Ingredients
- 1 white onion (or large yellow)
- 1 tbsp extra virgin olive oil (preferably spray)
- 1 tbsp balsamic vinegar (light)
- 1 pinch salt
- 1 pinch pepper
What You Need to Cook the Onion in a Jar
Jars suitable for jar cooking can be purchased, already equipped with 4 clasps, on the site Sweet Decorations, with discount code WECK10.
- 1 Microwave
- 1 Jar 500 ml with thin seal
- 1 Knife sharp
Learn More About Jar Cooking
The microwave jar cooking technique is easy and can be very helpful in the kitchen and in life. However, it involves rules that must be followed, here you find the instructions for jar cooking.
Sweet and Sour Onion in Jar Cooking
If you love the sweet and sour taste, when seasoning the onion, sprinkle half a teaspoon of sugar on top. I use coconut sugar or erythritol.