Slow Cooker Balsamic Tomatoes with Parmesan Breadcrumbs are a gorgeous little side dish that looks far harder than it is. Firm tomato halves slow-cook under a garlicky balsamic marinade with basil, oregano, and rosemary until tender, then get crowned with golden toasted breadcrumbs and Parmesan. Let them rest ten minutes before serving and watch them disappear.
Tired of the same old side dishes? Let’s transform the humble tomato into something truly spectacular with minimal effort. These Slow Cooker Balsamic Tomatoes are the definition of ‘set it and forget it’ elegance. We’ll gently coax out the tomatoes’ natural sweetness by slow-cooking them in a rich, herby balsamic marinade until they’re meltingly tender. The final touch? A golden, crunchy blanket of toasted Parmesan breadcrumbs that adds the perfect savory contrast. This is the side dish that will steal the show, pairing beautifully with everything from grilled chicken to a simple pasta.
Ingredients
• 2 large firm tomatoes, halved crosswise
• 3/4 cup / 75g (2.65 oz) soft whole wheat bread crumbs
• 2 Tablespoons / 10g (0.35 oz) grated Parmesan cheese
• 1.5 Tablespoons / 22 ml (0.7 fl oz) balsamic vinegar
• 2 teaspoons / 10 ml (0.3 fl oz) olive oil
• 2 cloves garlic, minced
• 1.5 teaspoons (7.5 ml / 0.3 fl oz) crushed dried basil
• 1/2 teaspoon (10 ml / 0.3 fl oz) crushed dried oregano
• 1/4 teaspoon (20 ml / 0.7 fl oz) crushed dried rosemary
• 1/8 teaspoon (40 ml / 1.4 fl oz) salt
• Butter or oil for toasting breadcrumbs (optional)
Instructions
1. Directions
2. Lightly grease the insert of your slow cooker. Arrange the tomato halves in a single layer, cut-side up.2. In a small bowl, whisk together the balsamic vinegar, olive oil, minced garlic, dried basil, oregano, rosemary, and salt to create the marinade.3. Carefully spoon the marinade evenly over the cut surface of each tomato half.4. Cover the slow cooker and cook on LOW for 1.5 to 2 hours, until the tomatoes are tender but still hold their shape.5. Just before the tomatoes are done, prepare the topping. Heat a small skillet over medium heat with a touch of butter or oil. Add the breadcrumbs and toast, stirring frequently, until golden brown and fragrant.6. Remove the skillet from the heat and immediately stir in the grated Parmesan cheese.7. Using a large spoon or spatula, gently transfer the cooked tomatoes to a serving platter.8. Drizzle any remaining cooking liquid from the slow cooker over the tomatoes.9. Sprinkle the toasted Parmesan breadcrumb mixture generously over the top.10. Let the tomatoes rest for 10 minutes before serving to allow the flavors to meld. Enjoy!
Nutritional Information
• Nutrition Information (Estimated)
• Serving Size: 1/2 recipe
• Calories: 185 kcal
• Carbohydrates: 22g
• Protein: 7g
• Fat: 8g
• Sodium: 310mg
• Fiber: 4g
Pro Tips
• Use firm, ripe tomatoes like Beefsteak or Roma, as they hold their shape best during the slow cooking process.
• For an extra layer of flavor, add a pinch of red pepper flakes to the balsamic marinade for a subtle kick of heat.
• The breadcrumb topping can be made ahead and stored in an airtight container for up to 2 days. Just sprinkle it on before serving.
• Don’t have a slow cooker? You can bake these in an oven-safe dish at 375°F (190°C) for 25-30 minutes until tender.
FAQ
Q: What are the best tomatoes for this slow cooker recipe
A: For best results, use large, firm, and ripe tomatoes such as Beefsteak or Roma. These varieties are sturdy and will hold their shape well during the slow cooking process without becoming mushy.
Q: Can I make these balsamic tomatoes in the oven instead
A: Yes, you can easily adapt this recipe for the oven. Place the prepared tomatoes in an oven-safe dish and bake at 375°F (190°C) for 25-30 minutes until they are tender.
Q: How do I store leftover balsamic tomatoes
A: Store any leftover tomatoes in an airtight container in the refrigerator for up to 3 days. For best texture, it’s recommended to store the toasted breadcrumb topping separately in its own airtight container at room temperature.
Q: What can I serve with these tomatoes
A: These versatile tomatoes are a fantastic side dish for grilled chicken, steak, or fish. They are also delicious served over pasta, polenta, or on top of crusty bread as an appetizer.
Pro Tips
- Use firm, ripe tomatoes like Beefsteak or Roma – they hold their shape best during slow cooking instead of collapsing into sauce.
- Toast the breadcrumbs in butter or oil just before serving and stir the Parmesan in off the heat; that keeps the topping crisp against the soft tomatoes.
- The breadcrumb topping can be made up to 2 days ahead and stored in an airtight container – just crisp it briefly and sprinkle it on before serving.
- A pinch of red pepper flakes in the balsamic marinade adds a subtle heat that plays beautifully against the sweet roasted tomatoes.
- No slow cooker? Bake the tomatoes in an oven-safe dish at 375F (190C) for 25-30 minutes until tender, then add the topping as usual.
Frequently Asked Questions
Can I prepare the topping ahead of time?
Yes. The toasted breadcrumb and Parmesan mixture keeps in an airtight container for up to 2 days. Give it a quick re-toast and sprinkle it over the tomatoes just before serving.
Which tomatoes work best for this recipe?
Firm, ripe varieties like Beefsteak or Roma hold their shape best through the slow cook. The recipe uses two large tomatoes halved crosswise, cooked cut-side up.
Can I make these without a slow cooker?
You can. Arrange the marinated tomato halves in an oven-safe dish and bake at 375F (190C) for 25-30 minutes until tender, then finish with the toasted Parmesan breadcrumbs.
How long do leftovers keep?
Store the cooked tomatoes in the fridge for up to 3 days. Reheat them gently and add the breadcrumb topping fresh so it stays crisp.
Recipe card below.
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Slow Cooker Balsamic Tomatoes with Parmesan Breadcrumbs
Ingredients
Method
- Directions
- Lightly grease the insert of your slow cooker.
- Arrange the tomato halves in a single layer, cut-side up. 2.
- In a small bowl, whisk together the balsamic vinegar, olive oil, minced garlic, dried basil, oregano, rosemary, and salt to create the marinade. 3. Carefully spoon the marinade evenly over the cut surface of each tomato half. 4.
- Cover the slow cooker and cook on LOW for 1. 5 to 2 hours, until the tomatoes are tender but still hold their shape. 5. Just before the tomatoes are done, prepare the topping.
- Heat a small skillet over medium heat with a touch of butter or oil.
- Add the breadcrumbs and toast, stirring frequently, until golden brown and fragrant. 6.
- Remove the skillet from the heat and immediately stir in the grated Parmesan cheese. 7.
- Using a large spoon or spatula, gently transfer the cooked tomatoes to a serving platter. 8.
- Drizzle any remaining cooking liquid from the slow cooker over the tomatoes. 9.
- Sprinkle the toasted Parmesan breadcrumb mixture generously over the top. 10.
- Let the tomatoes rest for 10 minutes before serving to allow the flavors to meld.
- Enjoy!
- Don't have a slow cooker? You can bake these in an oven-safe dish at 375°F (190°C) for 25-30 minutes until tender.
