Oven-roasted plum jam

August 27, 2021

Is there anything better than opening a jar of homemade jam in the middle of winter, when you can only dream of summer fruits? I don’t think so. For those who share my love for preserves, I’ve got the perfect recipe for oven-baked plum jam. It’s thick, sweet, with a beautiful colour, and made with minimal or even no added sugar. Have you got your plums ready?

A few years ago, I made jam in the oven for the first time, just out of curiosity. And I’ll never go back to the traditional method. Why? Because in my opinion, preparation in the oven is easier and less engaging. The final result satisfies me completely. In addition, the jam from the oven has a beautiful, intense colour. So if you’re wondering how to make plum jam, I recommend this method.

Oven-roasted plum jam - tips

What is the most important? Of course fruits, plums that ripen in the sun are a guarantee of delicious jam. The best are very soft ones, so soft that nobody wants to eat them. Simply, the quality of fruits will impact the final taste of your jam, that’s the secret.

How much sugar do you need? If the plums are ripe and sweet enough, the sugar can be omitted altogether. This year, I added one tablespoon of sugar (15 g) for 2.5 kg of plums. Therefore, it is important to check that the jam is sweet enough during the process and adjust the amount of sugar to your preferences.

I like to prepare jam in 2.5 kg batches because this amount of fruit fits perfectly in the roasting pan I use. I usually get 5 small jam jars from this amount of plums.

You can add a pinch of cinnamon, cloves or cardamom to the jam if you like these flavours. I stay with the basic version.

After putting the jam into jars, I pasteurise all of them. I put a paper towel on the bottom of a large pot and place closed jars on top so that they don’t touch each other. I pour water about 2 cm below the caps and bring it to the boil. I reduce the heat and cook the jars for about 15-20 minutes.

If you have a few plums left, you absolutely have to try this recipe:

Easy cake with plums and crumble

Oven-roasted plum jam

Thick and sweet jam, with a beautiful colour.

Print Pin Recipe

Prep Time 1 30

Course Jam

Servings 5 jars

Ingredients

2,5 kg ripe plums
1 tsp sugar (optional)

Instructions

Preheat the oven to 190°C.
Wash the plums, remove the pits, and cut them into quarters. Place the prepared fruit into a deep baking dish or roasting tin.
Put the dish in the preheated oven and bake for 30 minutes. After this time, carefully remove the dish from the oven (watch out for the hot steam) and stir the plums; they should have released a lot of juice. Check the sweetness. If needed, add a tablespoon of sugar (or more) and mix well. Return the dish to the oven for another 30 minutes.
After this, take the dish out of the oven and check the consistency (the jam will thicken further as it cools). If not all the plums have broken down, you can mash them with a spoon. If the jam is still too runny, put it back in the oven for an additional 15-20 minutes (be careful not to over-bake). Transfer the finished jam into sterilised jars and process them in a pot of water. Done!

Keywords oven roasted jam, plums