Roasted Garlic Aioli Crostini

Highlighted under: Sweet Recipe Collection

I absolutely love making Roasted Garlic Aioli Crostini when I want to impress my guests with a simple yet sophisticated appetizer. The combination of creamy garlic aioli spread over crispy toasted bread is simply irresistible. Each bite brings out the rich flavors of roasted garlic and fresh herbs, making it the perfect starter for any gathering. It's an easy recipe that comes together quickly, and it always leaves everyone asking for more. Trust me, once you try this, it will become a go-to for your entertaining needs!

Luca

Created by

Luca

Last updated on 2026-01-20T11:22:27.944Z

When I first experimented with roasted garlic aioli, I discovered that the process of roasting garlic transforms its raw bite into a sweet, caramelized flavor that's incredibly delightful. Pairing this aioli with crisp crostini creates a wonderful texture contrast that I just adore. I love to serve it at parties because it's a crowd-pleaser and easy to prepare, and everyone can savor the homemade touch!

The key to perfect crostini is toasting them until they are golden brown—this not only enhances the flavor but also ensures they hold up well under the aioli. I usually prefer using a combination of rustic Italian bread; it offers a more robust base and complements the creamy aioli beautifully.

Why You'll Love This Recipe

  • Creamy aioli bursting with roasted garlic flavor
  • Crispy, crunchy crostini that's perfect for dipping
  • A delicious crowd-pleaser for gatherings and celebrations

Perfecting the Roasted Garlic

Roasting garlic transforms its robust flavor into a sweet, mellow delight. When you wrap the bulb in foil and roast it at 400°F (200°C), you'll create a tender texture that nearly caramelizes the cloves. It's crucial to slice off just the top; exposing the cloves helps them cook evenly while keeping the bulb intact. After about 30-35 minutes in the oven, they should be soft and golden brown, which indicates they’re ready to be squeezed into your aioli.

Keep an eye on your garlic to avoid burning. If you notice a deep brown color on the outer skin, it may be overcooked. Conversely, if the cloves are still firm after 35 minutes, give them an additional 5 minutes before checking again. The aroma will also fill your kitchen, signaling that the garlic is nearly done.

Mastering the Aioli

The key to a successful aioli lies in the emulsification process. Combining the egg yolk, mustard, and lemon juice provides a robust base, but you must add the vegetable oil slowly while whisking. This gradual incorporation helps to achieve that thick, creamy consistency characteristic of a good aioli. If you're having trouble with emulsification, a tip is to start with just a few drops of oil and whisk vigorously until you see it combine before gradually increasing the oil.

For those looking for an alternative to raw egg, feel free to substitute with pasteurized eggs or try a vegan mayonnaise base. Adjust the seasoning carefully, as the salt will enhance the roasted garlic's flavor. Taste your aioli before serving; it should be well-balanced, creamy, and bursting with that delectable roasted garlic essence.

Crostini Variations and Serving Suggestions

When preparing crostini, the options are endless. While a classic baguette is a great choice, consider using whole-grain or gluten-free bread to suit dietary preferences. You can also infuse additional flavors into the oil—try adding minced herbs or garlic powder to elevate the taste of your crostini. Toasting them until golden brown not only enhances the texture but also creates a delightful crunch that perfectly contrasts the creamy aioli.

For serving, feel free to get creative! Top the aioli-spread crostini with sliced cherry tomatoes, a sprinkle of feta, or fresh arugula for added freshness. They can also be served alongside a charcuterie board or as part of a larger spread. If you have leftover aioli, it pairs wonderfully with roasted vegetables or as a sandwich spread, making it a versatile addition to your culinary arsenal.

Ingredients

Ingredients

Crostini

  • 1 baguette, sliced
  • 2 tablespoons olive oil
  • Salt, to taste

Roasted Garlic Aioli

  • 1 whole bulb of garlic
  • 1 large egg yolk
  • 1 teaspoon mustard
  • 1 tablespoon lemon juice
  • 1 cup vegetable oil
  • Salt and pepper, to taste

Instructions

Instructions

Prepare the Roasted Garlic

Preheat your oven to 400°F (200°C). Slice the top off the whole bulb of garlic and drizzle with olive oil. Wrap it in foil and roast for 30-35 minutes or until soft.

Make the Aioli

In a bowl, combine egg yolk, mustard, and lemon juice. Squeeze the roasted garlic out of its skin and add to the bowl. Slowly whisk in vegetable oil until thick and creamy.

Season with salt and pepper.

Prepare the Crostini

Brush the baguette slices with olive oil and sprinkle with salt. Place on a baking sheet and toast in the oven for about 10-12 minutes or until golden brown.

Assemble and Serve

Spread the roasted garlic aioli generously over each crostini and serve immediately, garnished with fresh herbs if desired.

Pro Tips

  • For extra flavor, try adding fresh herbs like parsley or basil to the aioli. You can also experiment with different types of bread for the crostini, such as sourdough or whole grain.

Make-Ahead and Storage Tips

You can prepare the roasted garlic aioli a few days ahead, which develops the flavors even further. Just store it in an airtight container in the fridge, and be sure to give it a good stir before serving. To maintain the aioli’s creamy texture, avoid storing it for too long, as it’s best consumed within a week. The roasted garlic should hold up well, but you'll want to check for any changes in color or odor before using.

For the crostini, you can slice and prepare the baguette in advance. Keep the slices in a sealed container so they don’t become stale. Toast them just before serving to maintain that crunchy texture—this step only takes about 10-12 minutes in a preheated oven at 400°F (200°C). If you have some toasted crostini left, store them in an airtight container for a day or two; they can be revived slightly in the oven.

Common Troubleshooting Scenarios

If your aioli isn't thickening, it may be due to adding the oil too quickly. Slow down and whisk harder to help it emulsify. On the other hand, if your aioli is too thick, a little water or lemon juice can help loosen it without compromising flavor. Also, for those who prefer a lighter version, feel free to replace some of the vegetable oil with Greek yogurt for a tangy twist.

For the crostini, take care not to over-toast them, as bread can become too brittle. Look for a light golden color and a crunchy texture, but avoid any burnt edges. If you find that your crostini are not as crispy as you'd like, consider using a higher heat or a longer toasting time, adjusting as necessary to get them just right.

Questions About Recipes

→ Can I make aioli without an egg?

Yes, you can use a vegan mayonnaise as a base for aioli if you prefer to avoid raw eggs.

→ How do I store leftover aioli?

Store leftover aioli in an airtight container in the refrigerator for up to 3 days.

→ Can I make crostini in advance?

You can prepare crostini in advance; just store them in an airtight container at room temperature until ready to use.

→ What can I serve with aioli?

Aioli pairs well with grilled vegetables, seafood, or as a dip for chips and crackers.

Roasted Garlic Aioli Crostini

I absolutely love making Roasted Garlic Aioli Crostini when I want to impress my guests with a simple yet sophisticated appetizer. The combination of creamy garlic aioli spread over crispy toasted bread is simply irresistible. Each bite brings out the rich flavors of roasted garlic and fresh herbs, making it the perfect starter for any gathering. It's an easy recipe that comes together quickly, and it always leaves everyone asking for more. Trust me, once you try this, it will become a go-to for your entertaining needs!

Prep Time15 minutes
Cooking Duration20 minutes
Overall Time35 minutes

Created by: Luca

Recipe Type: Sweet Recipe Collection

Skill Level: Intermediate

Final Quantity: 6 servings

What You'll Need

Crostini

  1. 1 baguette, sliced
  2. 2 tablespoons olive oil
  3. Salt, to taste

Roasted Garlic Aioli

  1. 1 whole bulb of garlic
  2. 1 large egg yolk
  3. 1 teaspoon mustard
  4. 1 tablespoon lemon juice
  5. 1 cup vegetable oil
  6. Salt and pepper, to taste

How-To Steps

Step 01

Preheat your oven to 400°F (200°C). Slice the top off the whole bulb of garlic and drizzle with olive oil. Wrap it in foil and roast for 30-35 minutes or until soft.

Step 02

In a bowl, combine egg yolk, mustard, and lemon juice. Squeeze the roasted garlic out of its skin and add to the bowl. Slowly whisk in vegetable oil until thick and creamy. Season with salt and pepper.

Step 03

Brush the baguette slices with olive oil and sprinkle with salt. Place on a baking sheet and toast in the oven for about 10-12 minutes or until golden brown.

Step 04

Spread the roasted garlic aioli generously over each crostini and serve immediately, garnished with fresh herbs if desired.

Extra Tips

  1. For extra flavor, try adding fresh herbs like parsley or basil to the aioli. You can also experiment with different types of bread for the crostini, such as sourdough or whole grain.

Nutritional Breakdown (Per Serving)

  • Calories: 220 kcal
  • Total Fat: 18g
  • Saturated Fat: 2g
  • Cholesterol: 25mg
  • Sodium: 150mg
  • Total Carbohydrates: 12g
  • Dietary Fiber: 1g
  • Sugars: 1g
  • Protein: 3g