Slow-Roasted Tomatoes and Basil

Name: Slow-Roasted Tomatoes and Basil
Total time: 3 h 30 min
Yield: About 5 cups
Cuisine: mediterranean
Ingredients: 24 plum tomatoes, halved lengthwise; 1 tablespoon extra-virgin olive oil; 1/2 cup chopped onion; 3 large cloves garlic, chopped; 1/4 teaspoon red pepper flakes; 10 basil leaves, torn; 1/4 teaspoon sugar; Salt to taste

By Florence Fabricant

Updated May 6, 2025

Total Time: 3 hours 30 minutes
Rating: 4(18)
Comments: Read comments

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Ingredients

Yield:About 5 cups

24plum tomatoes, halved lengthwise
1tablespoon extra-virgin olive oil
½cup chopped onion
3large cloves garlic, chopped
¼teaspoon red pepper flakes
10basil leaves, torn
¼teaspoon sugar
Salt to taste

Ingredient Substitution Guide

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Preparation

Step 1
Preheat oven to 250 degrees. Take a sheet pan large enough to hold tomatoes in a single layer and line it with parchment paper. Arrange tomatoes, cut side up, in pan.
Step 2
Heat oil in heavy skillet. Add onion and cook over low heat until tender but not brown. Stir in garlic, cook a few minutes longer, and then remove from heat.
Step 3
Scatter onion and garlic over tomatoes along with pepper flakes, basil, sugar and salt. Place in oven and roast uncovered about 3 hours, until tomatoes are cooked but hold their shapes. Allow tomatoes to cool, slip off skins, then use in recipes or freeze in containers for future use.