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Tomato confit, twelve ways, photographed in the test kitchen
Pantry projects

Tomato confit, twelve ways

One pan, one afternoon, half a year of dinners. Slow-roasted plum tomatoes in olive oil, the most useful thing you'll cook all month.

Total 2 hr 45 minServes 12Weekend cookYield Two pint jars

Tomato confit is what a stocked pantry should be, a low-effort project that lives in jars on a Tuesday shelf and turns supper from question to answer. Twelve ways to use it follow at the bottom; the recipe itself is one tray, one afternoon.

Why this recipe works

  • A 275°F (135°C) oven slowly drives off water, concentrating sugars without caramelising the skins.
  • Olive oil submerged below the tomatoes' midline keeps them from drying, the oil itself becomes a finishing condiment.
  • Salt added on the way in, not at the end, draws moisture and seasons the oil during the long roast.

Ingredients

  • 2 lbplum tomatoesripe, halved lengthwise
  • 1 cupgood olive oil
  • 6 clovesgarlicpeeled, left whole
  • 4 sprigsfresh thyme
  • 1 tspflaky sea salt

Method

  1. HeatHeat oven to 275°F (135°C).
  2. ArrangeLay halved tomatoes cut-side up in a snug roasting tray. Tuck garlic and thyme between them. Pour olive oil so it pools to the tomatoes' midline. Scatter salt.
  3. RoastRoast 2 hours 30 minutes. Skins should slip; oil should be deeply red.
  4. CoolCool completely in the tray. Transfer to clean jars, tomatoes first, then oil to cover.

Variations

Chili oil version
Add a teaspoon of chili flakes with the salt.
Bay-leaf version
Two dried bay leaves under the thyme.
Anchovy oil
Two anchovy fillets; melt into the oil during the last 30 min.

Storage & make-ahead

Refrigerated, three weeks. Bring back to room temp before using; the oil sets in the cold.

Notes: Cherry tomatoes work; reduce time to 1 hr 45 min. The oil is gold, use it on toast, in vinaigrette, on beans.

Sources & further reading (2)
  1. USDA FoodData Central, Tomatoes, red, ripe, raw, year round average (NDB 11529).USDA
  2. Larderlab test kitchen log, confit trials at 250°F, 275°F, 300°F across plum and cherry varieties, March 2026.Editorial

Larderlab provides general information for educational purposes. It is not a substitute for medical advice. Consult a registered dietitian or your healthcare provider for personalised nutrition guidance.