Red Onion Jam

By @saucesanddips | Sweet-Savory Jam for Sliders, Cheese Boards & More

Red Onion Jam is a caramelized, tangy-sweet condiment made from slow-cooked red onions, vinegar, and a touch of sugar or wine. It’s the ultimate flavor booster for mini beef sliders, grilled meats, or cheese platters—adding depth, richness, and a hint of acidity.

Ingredients (Makes about 1 cup)

2 large red onions, thinly sliced

1 tablespoon olive oil or butter

2 tablespoons brown sugar

1/4 cup balsamic vinegar

1/4 cup red wine (optional but recommended)

1/2 teaspoon salt Black pepper to taste

Optional: 1 sprig thyme or 1/2 tsp fresh rosemary

Instructions

1. Sauté the Onions

In a skillet over medium heat, add olive oil or butter. Add sliced red onions and a pinch of salt. Cook slowly for 10–15 minutes until very soft and translucent.

2. Caramelize

Add brown sugar and continue to cook for another 10–15 minutes, stirring occasionally, until onions are deep golden and caramelized.

3. Deglaze and Reduce

Pour in balsamic vinegar and red wine (if using). Scrape up any browned bits and simmer until thickened and syrupy—about 5–7 minutes.

4. Season and Cool

Add herbs if using, season with salt and black pepper. Let cool slightly, then transfer to a jar. Keeps in fridge up to 1 week.

Serving Ideas

Spoon generously onto mini beef sliders Pair with brie, goat cheese, or cheddar on a cheeseboard Use as a condiment for steaks, sandwiches, or roasted veggies

Tips from @saucesanddips

For a smoother jam, finely dice the onions instead of slicing Balsamic adds acidity; wine adds richness—use both for balance Make in advance and warm gently before serving for best texture

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