Heart Healthy Oven Roasted Plum Tomatoes Recipe

(5.0)
By Judy Capodanno
Updated 3/16/2026
Dietitian Reviewed: Jane Schwartz, RDN, CLT
Approved for These Diets:

Juicy plum tomatoes are transformed into flavor-packed gems in this simple, heart-healthy recipe. By roasting them slowly with a fragrant blend of salt, olive oil, and herbes de Provence, you intensify their natural sweetness without the need for excess sugar or sodium.

Whether you're looking for a diabetic-friendly side dish, a vibrant salad-topper, or a crowd-friendly appetizer, these soft and savory tomatoes fit the bill. They are naturally gluten-free and vegan, making them a versatile addition to any Mediterranean-inspired meal.

Complete your main course with any of our delicious and healthy side dish recipes!

Total Time
60 minutes
Servings
6
Calories
30

What Makes These Oven Roasted Plum Tomatoes Healthy

Roasting plum tomatoes does more than just concentrate their savory flavor; it actually enhances their nutritional profile. This preparation method is specifically designed to support heart health and blood sugar management by using heart-healthy fats and antioxidant-rich ingredients.

Key Health Highlights

  • Boosted Lycopene: Roasting tomatoes increases the bioavailability of lycopene, a powerful antioxidant linked to improved heart health and reduced inflammation.
  • Heart-Healthy Fats: Using olive oil provides monounsaturated fats, which help support healthy cholesterol levels.
  • Blood Sugar Friendly: With only 6g of carbs and a low glycemic index, these are an excellent choice for those managing diabetes.
  • Potassium Source: Tomatoes are naturally high in potassium, which helps the body maintain healthy blood pressure levels.
  • Low Sodium & Vegan: This recipe uses minimal sea salt and entirely plant-based ingredients to suit various dietary needs.

FAQs About Oven Roasted Tomatoes

While the recipe suggests peeling them after roasting for a smoother texture, the skins are perfectly edible and contain extra fiber.

Yes, the sugar is optional, but it helps balance the natural acidity of the tomatoes during the long roasting process.

Plum or Roma tomatoes are best due to their low water content, but cherry tomatoes are a great alternative for a sweeter, bite-sized version.

Healthy Roasted Vegetable Sides

Complement your main course with these nutrient-dense roasted vegetable side dishes that use heart-healthy oils and simple seasonings to bring out the natural, caramelized flavors of garden-fresh produce.

Mediterranean-Inspired Dishes

Explore more Mediterranean-style recipes that focus on lean proteins and antioxidant-rich vegetables, perfect for anyone following a heart-healthy or diabetic-friendly eating plan without sacrificing bold, savory flavor.

Ingredient Spotlight: Plum Tomatoes

Plum tomatoes (also known as Roma tomatoes) are the ideal candidate for roasting because they have a lower moisture content and thicker fruit walls compared to slicing tomatoes. This allows them to hold their shape in the oven while their sugars caramelize, resulting in a meaty texture and concentrated "umami" flavor that shines in simple preparations.

Healthy Variations

  • Garlic Roasted: Add 3–4 cloves of minced garlic to the baking sheet for a more pungent, savory flavor.
  • Cherry Tomatoes: You can use this same seasoning for cherry tomatoes; just reduce the roasting time to 20–30 minutes at 325°F.
  • Balsamic Glaze: Drizzle with a balsamic reduction just before serving for an extra layer of Mediterranean flair.
Photo Credit: Shutterstock

Ingredients

Recipe yields 6 servings

Directions

  1. Step 1

    Preheat oven to 325°. Line a baking sheet with parchment paper.

  2. Step 2

    Slice the tops off the tomatoes and discard. Slice the tomatoes in half lengthwise and lay them flesh side down on baking sheet. Drizzle each tomato with olive oil. Sprinkle salt, pepper and sugar evenly over the tomatoes.

  3. Step 3

    Add a small amount of herbes de Provence to each tomato. Roast in oven for 45 minutes to 1 hour (the tomatoes will shrivel up and lose their liquid when done). When cool, peel skin from back of tomatoes. Serve warm, cold or at room temperature.

  4. Step 4

    Oven roasted tomatoes can be stored in an airtight container or freezer bags in the refrigerator for up to 1 week or in the freezer for up to 6 months.

Nutrition Facts

Serving Size:
1 tomato

30
Calories
2
g
Fat
0
mg
Cholesterol
200
mg
Sodium
6
g
Carbs
0
g
Sat. Fat
1
g
Fiber
1
g
Protein

Alternative Cooking Methods

  • High-Heat Roasting: For a faster result, you can roast at 400°F for 20–25 minutes, though the texture will be less "sun-dried" and more charred.
  • Air Fryer: Place halves flesh-side up at 350°F for 12–15 minutes for a quick small batch.

Serving & Storage Tips

  • Storage: Store roasted tomatoes in an airtight container in the refrigerator for up to 1 week.
  • Freezing: These freeze exceptionally well. Place them in freezer bags for up to 6 months to add to future soups or sauces.
  • Serving: Serve warm as a side, cold on a charcuterie board, or at room temperature mixed into a grain bowl.

What to Serve With These Heart Healthy Oven Roasted Plum Tomatoes

These tomatoes are a natural partner for Mediterranean dishes. Try serving them alongside grilled fish or as a topper for an Arugula Ricotta Pizza. They also make a fantastic breakfast addition—try them smashed onto Avocado Toast for a nutrient-dense start to your day.

Ingredient Substitutions

If you don't have Herbes de Provence, a mix of dried thyme, oregano, and rosemary works beautifully.

While olive oil is preferred for heart health, avocado oil can be used for its high smoke point.

The small amount of sugar helps caramelize the acid in the tomatoes; you can omit it or use a pinch of stevia if strictly monitoring sugar intake.

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