Whipped Feta & Confit Tomato Crostini - Leftover Bread Recipe

This is THE BEST way to use up stale bread and turn it into something absolutely SPECTACULAR! Crispy, cheesy crostini bases (baked with parmesan underneath for that extra caramelized crunch) topped with whipped feta and sweet, confited cherry tomatoes. It's fresh, salty, sweet, and utterly delicious - the perfect vegetarian canapé that looks like you've spent ages making it but actually takes just 15 minutes!

Recipe Details:

• Prep Time: 5 minutes
• Cook Time: 10 minutes
• Total Time: 15 minutes
• Serves: Makes 12-15 crostini
• Difficulty: Easy
• Special Equipment: Baking tray, small frying pan, mixing bowl

Stale bread is probably the NUMBER ONE thing that gets thrown away the most. But with just a little bit of time in the oven, that bread becomes the most incredible crispy, crunchy base for all sorts of delicious toppings. These crostini are special because we're baking them ON TOP of grated cheese - as the bread toasts, the cheese underneath caramelizes and gets all golden and crispy, creating this incredible savoury base that's honestly better than any shop-bought cracker. Then we're whipping up some feta with a bit of yogurt or cream, and we're slowly confiting cherry tomatoes on the stovetop with balsamic vinegar and a touch of tomato paste for extra depth. The tomatoes become sweet, and absolutely divine. The combination of crispy cheesy bread, creamy tangy feta, and sweet tomatoes is just PERFECTION. And the best part? You can adapt the toppings to absolutely anything you've got. The crostini base is the hero here, and it'll make anything you put on top taste amazing.

Why You'll Love This Recipe

• Uses up stale bread: The BEST way to give leftover bread a second life
• Cheesy crispy base: Baking on cheese creates incredible caramelized crunch
• Ready in 15 minutes: Quick enough for last-minute entertaining
• Vegetarian-friendly: Perfect meat-free option for your canapé board
• Adaptable toppings: Use whatever vegetables and cheese you have!

Ingredients

For the Crostini Bases:

• 1 small baguette or ciabatta even a roll!  (about 8-15 slices, size dependent)
• 50g cheese (anything you like, I used cheddar but could be parmesan), grated
• 2 tablespoons olive oil
• 1 clove garlic (optional, for rubbing)

For the Whipped Feta:

• 100g feta cheese, crumbled
• 2 tablespoons plain yogurt or double cream
• Juice of ½ lemon and zest
• Freshly cracked black pepper

For the Confit Tomatoes:

• 200g cherry tomatoes
• 1 tablespoon olive oil
• 1 tablespoon balsamic vinegar
• 1 teaspoon tomato paste (optional but recommended)
• 1 sprig fresh basil (keep leaves for garnish)
• Salt and pepper, to taste

For Garnish:

• Fresh basil leaves

Instructions

1. Preheat your oven: Preheat your oven to 180°C (160°C fan/350°F/Gas Mark 4). Line a baking tray with greaseproof paper (and yes, you can reuse paper if you've only used it once before - waste not, want not!).

2. Slice the bread: Slice your stale bread into even slices, about 1cm thick. Try to keep them all the same thickness so they bake evenly - thicker bits will take longer to crisp up.

3. Prepare the cheese base: Grate your parmesan/cheddar (or whatever hard cheese you're using) and scatter it evenly across the lined baking tray. The cheese will melt and caramelize under the bread!

4. Arrange bread and oil: Lay your bread slices directly on top of the scattered cheese. Drizzle the olive oil over all the bread slices, making sure each one gets a little bit of oil.

5. Bake the crostini: Pop the tray into the oven and bake for 5-7 minutes until the bread is golden and crispy. Flip the slices over and bake for another 3-5 minutes to make sure both sides are crispy and the cheese is properly caramelized. Watch them carefully - they can burn quickly!

6. Optional garlic rub: If you want extra flavour, rub a cut clove of garlic over the hot crostini as soon as they come out of the oven. This adds a lovely gentle garlic flavour without being overpowering.

7. Make the whipped feta: While the crostini are baking, add the crumbled feta to a bowl with the yogurt (or cream), lemon juice, and black pepper. Mash and whip everything together until it's light and fluffy. If you want it super smooth, you can blitz it in a food processor, but honestly, a fork works brilliantly for this small amount. Taste and adjust seasoning - you probably won't need salt because feta is already quite salty.

8. Confit the tomatoes: In a small frying pan over medium-low heat, add the olive oil, cherry tomatoes, balsamic vinegar, tomato paste, and the basil stalk (save the leaves for garnish). Season with salt and pepper. Let them cook slowly for 5-8 minutes until they're soft, but not burst or mushy. You want them to hold their shape. Remove the basil stalk.

9. Assemble the crostini: Spread a generous dollop of whipped feta onto each crostini base. Top with a tomato per crostini.

10. Garnish and serve: Finish with fresh basil leaves torn over the top and a little of the oil which you cooked the tomatoes in. Serve immediately while the crostini are still crispy!

Chef's Tips

Stale is better: Slightly stale bread is actually BETTER for crostini because it crisps up beautifully. Fresh bread can be too soft.

Cheese underneath is genius: Baking the bread on top of grated cheese creates an incredible caramelized, crispy base. Don't skip this step!

Even slicing matters: Try to cut all your bread slices the same thickness so they bake evenly. Use a serrated bread knife for clean cuts.

Watch them closely: Crostini can go from golden to burnt very quickly, especially once you flip them. Keep an eye on them!

Don't burst the tomatoes: Cook them low and slow. You want them soft and jammy but still holding their shape, not turned to mush.

Tomato paste adds depth: That little bit of tomato paste makes the confited tomatoes taste SO much richer. Don't skip it if you have it!

Make bases ahead: The crostini bases can be made 1-2 days ahead and stored in an airtight container. Just assemble before serving.

Substitutions & Variations

Different cheese base: Use cheddar, gruyere, pecorino, or any hard cheese instead of parmesan

Whipped ricotta: Use ricotta instead of feta for a milder, creamier topping

Goat cheese version: Swap feta for soft goat cheese - equally delicious!

Roasted vegetables: Top with roasted red peppers, aubergine, courgette, or mushrooms instead of tomatoes

Caramelized onions: Slowly cooked onions are INCREDIBLE on these crostini

Pesto addition: Swirl a little pesto through the whipped feta for extra flavour

Vegan version: Use vegan feta and plant-based yogurt - still absolutely delicious!

Storage & Reheating

Best served fresh: These crostini are at their absolute best served immediately while the bases are still crispy.

Storage: Store components separately. Crostini bases in an airtight container at room temperature for up to 2 days. Whipped feta and confited tomatoes in separate airtight containers in the fridge for up to 3 days.

Assembled crostini: Once assembled, eat within 30 minutes or the bases will go soggy.

Not suitable for freezing: The assembled crostini don't freeze well due to the fresh ingredients and dairy.

Bring to room temp: If you've made the whipped feta ahead and stored it in the fridge, bring it to room temperature before serving for the best texture and flavour.

Frequently Asked Questions

Q: Can I use fresh bread instead of stale? A: Yes, but slice it and leave it out for a few hours to dry slightly first, or toast it at a lower temperature for longer to dry it out without burning.

Q: What if I don't have parmesan? A: Any hard cheese works! Cheddar, gruyere, pecorino - whatever you've got. Even a vegetarian hard cheese is fine.

Q: Can I make these without cheese? A: You can, but the cheesy base adds incredible flavour and that caramelized crunch. If you're dairy-free, use vegan parmesan or just oil and bake a bit longer.

Q: My tomatoes burst. What happened? A: The heat was too high! Cook them gently over low-medium heat. They should not burst and turn to sauce.

Q: Can I use cream instead of yogurt for the feta? A: Absolutely! Double cream, sour cream, or crème fraîche all work beautifully. Yogurt is just what most people have in the fridge.

Q: How do I stop the crostini going soggy? A: Don't assemble them too far in advance. Keep the bases, feta, and tomatoes separate until 30 minutes before serving, then assemble.

Q: Can I use different vegetables? A: Yes! Roasted peppers, aubergine, courgette, mushrooms, or caramelized onions all work brilliantly on these bases.

Q: What's the difference between crostini and bruschetta? A: Crostini are smaller, thinner slices, while bruschetta is typically larger, thicker slices of bread. Both are delicious!

You Might Also Like

Homemade Healthy Seed Crackers - Another brilliant way to use up leftover ingredients for the perfect party nibbles.

Courgette, Feta & Chilli Salad - If you love feta, try this fresh summer salad with a kick of chilli.

Zaalouk - Moroccan Roasted Aubergine Dip - Another brilliant vegetarian dip that would be amazing on these crostini bases!

Enjoy!

Del x

These whipped feta and confit tomato crostini are the ULTIMATE way to use up stale bread! Perfect for New Year's parties or any time you need an impressive vegetarian canapé!