Name: Caramelized Onion Focaccia Recipe
Prep time: 3 h 30 min
Cook time: 15 min
Total time: 3 h 45 min
Cuisine: Italian
Ingredients: 2 tbsp olive oil; 1 tbsp salted butter; 4 cups diced yellow onions (about 520 g); 1/4 cup water (56 g); 2 tbsp fresh thyme, chopped; 2 1/2 cups all purpose flour (320 g); 1 1/4 cup lukewarm water (283 g); 1/4 cup parmesan cheese, finely shredded (30 g); 2 tbsp olive oil (20 g); 1 tbsp granulated sugar; 2 tsp instant yeast; 3/4 tsp salt; 1-2 tbsp fresh thyme; 1/4 cup olive oil (40 g); 3 whole garlic cloves, crushed

Jump to Recipe· 4.3 from 1 review

If you are looking for a bread that is irresistibly fluffy with a sweet and savory touch, this Caramelized Onion Focaccia Recipe is an absolute winner. This Italian classic combines the richness of deeply caramelized onions, the fresh aroma of thyme, and a hint of garlic-infused olive oil, resulting in a focaccia that’s perfect as an appetizer or a side dish. The no-knead dough makes it approachable for any home baker, and the golden crust with soft interior will have everyone asking for seconds.

Ingredients You’ll Need

The image shows six bowls and a glass measuring cup arranged on a white marbled surface. In the center is a large white bowl filled with white flour, with a slightly uneven surface. Above it is a small white bowl holding fresh green thyme sprigs and several whole garlic cloves. To the right of the thyme bowl is a small white bowl with golden-yellow olive oil. Below the olive oil is a clear glass measuring cup filled with water. Below the flour bowl is a white bowl with small, chopped white onions. To the left of the onions is a small white bowl filled with off-white yeast granules, and to the right of the onions is a small white bowl with white sugar granules. Each ingredient is labeled in large black text. Photo taken with an iphone --ar 4:5 --v 7

This Caramelized Onion Focaccia Recipe uses simple, everyday ingredients that come together beautifully to create layers of flavor and texture. Each component plays a key role, from the golden caramelized onions to the fragrant thyme and the cheesy hint of parmesan in the dough.

2 tbsp olive oil: Used for caramelizing the onions and adding richness to the dough and topping.
1 tbsp salted butter: Helps soften and flavor the onions during caramelization.
4 cups diced yellow onions: The star ingredient that provides sweetness and depth when caramelized.
1/4 cup water: Added to help onions soften evenly while cooking.
2 tbsp fresh thyme, chopped: Brings an herby brightness that pairs perfectly with the onions.
2 1/2 cups all purpose flour: The base for the focaccia dough, provides structure and fluffiness.
1 1/4 cup lukewarm water: Activates the yeast and hydrates the dough for a soft crumb.
1/4 cup parmesan cheese, finely shredded: Adds a subtle umami note and slight saltiness to the bread.
1 tbsp granulated sugar: Feeds the yeast and enhances browning during baking.
2 tsp instant yeast: Makes the dough rise, yielding that light and airy texture.
3/4 tsp salt: Balances flavors and strengthens the dough.
1-2 tbsp fresh thyme for topping: Sprinkled on top to elevate the aroma and taste.
1/4 cup olive oil for garlic oil: Infuses the focaccia with rich, roasted garlic flavor.
3 whole garlic cloves, crushed: Sautéed to make garlic oil that’s brushed onto the dough.

How to Make Caramelized Onion Focaccia Recipe

Step 1: Caramelize the Onions

Start by melting butter and olive oil in a skillet over medium heat. Add the diced yellow onions with a splash of water and cover to soften them. Once softened, reduce to medium-low heat and stir frequently to prevent burning. This slow cooking process takes about an hour but transforms the onions into a deeply sweet and golden caramelized delight. Finish by stirring in fresh thyme to infuse an herby note that lifts the flavor beautifully.

Step 2: Prepare the Dough

In a large bowl, combine the all-purpose flour, lukewarm water, parmesan cheese, olive oil, sugar, yeast, and salt. Mixing these ingredients together with a wooden spoon until fully incorporated will give you a sticky, shaggy dough that requires no kneading—a blissfully easy step in this recipe.

Step 3: First Rise

Lightly oil your hands and a large bowl before placing the dough inside. Cover it tightly with plastic wrap and put it in a warm spot for about an hour until it doubles in size. This rise is essential for developing that airy, fluffy texture that makes focaccia so delightful.

Step 4: Make the Garlic Oil

While the dough rises, gently heat olive oil in a skillet and add crushed garlic cloves. Cook them over low heat until the garlic is fragrant and begins to brown, about 5 minutes. Remove garlic pieces and let the garlic-infused oil cool. This oil will add an aromatic punch to your focaccia.

Step 5: Shape and Second Rise

Preheat your oven to 425 F (220 C). Pour half of the garlic oil into an unlined 9×9 metal baking pan. Lightly oil your hands again and with a gentle touch, stretch each side of the dough upward and fold it toward the center, repeating this process for all four sides. Turn the dough seam side down into the pan, cover with plastic wrap, and let it rise another hour in a warm place. The dough should be bubbly and nearly fill the pan when ready.

Step 6: Bake with Garlic Oil and Thyme

Once risen, drizzle the remaining garlic oil over the dough’s surface. Press your fingertips deeply into the dough to create signature dimples that hold pockets of oil and flavor. Sprinkle fresh thyme on top and bake for 12-18 minutes until the focaccia is beautifully golden and the internal temperature reaches at least 190 F (88 C).

Step 7: Add Caramelized Onions and Serve

Remove the focaccia from the oven and immediately spoon on the caramelized onions. Let the bread cool slightly in the pan on a wire rack, then finish with flaky sea salt and extra thyme if desired. Slice into squares and get ready to indulge in warm, heavenly focaccia slices.

How to Serve Caramelized Onion Focaccia Recipe

The image shows a close-up of a flatbread with two main layers. The base layer is a light golden-brown soft bread with a slightly bubbly texture. On top, there is a thick spread of caramelized onions that are dark brown with some shiny, sticky spots. Scattered over the onions are small fresh green herb leaves and coarse white salt flakes, adding texture and color contrast. The background is a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

A simple sprinkling of flaky sea salt and fresh thyme sprigs adds the perfect finishing touch to your focaccia, enhancing both flavor and visual appeal. For an extra indulgent touch, consider a light drizzle of good-quality balsamic glaze right before serving to complement the sweetness of the caramelized onions.

Side Dishes

This focaccia pairs wonderfully with fresh, vibrant salads such as arugula with lemon vinaigrette or a tomato and mozzarella caprese. It also works beautifully alongside soups, especially creamy tomato or minestrone, providing a wonderful bread experience to soak up every last bit of broth.

Creative Ways to Present

For a fun appetizer, cut the focaccia into small squares and serve with a trio of dips—think classic basil pesto, whipped ricotta, and roasted red pepper hummus. You could also transform it into an open-faced sandwich base topped with prosciutto, fresh arugula, and a touch of shaved parmesan.

Make Ahead and Storage

Storing Leftovers

Focaccia tastes best fresh, but if you happen to have leftovers, store them in an airtight container in the refrigerator. This helps preserve the bread’s moisture and flavor for a couple of days. It’s best to bring it to room temperature or warm it before serving again.

Freezing

You can freeze your focaccia by wrapping it tightly in plastic wrap and then again in aluminum foil to prevent freezer burn. Frozen focaccia keeps well for up to a month, making it a great make-ahead option for busy days.

Reheating

To reheat, remove any foil and microwave slightly until warm, or better yet, warm in a preheated oven at 350 F (175 C) for about 10 minutes or until just heated through. This method helps to crisp up the crust while keeping the inside soft and fluffy.

FAQs

Can I use different types of onions for this recipe?

Yellow onions are ideal for caramelizing because of their natural sweetness, but you can also experiment with red or sweet onions for a slightly different flavor profile. Just keep in mind cooking times and sweetness levels might vary.

Is it necessary to use instant yeast, or can I substitute active dry yeast?

You can substitute active dry yeast, but you’ll need to proof it in warm water with a pinch of sugar first to activate. Instant yeast mixes in directly without proofing, which makes the process quicker.

Can I make this recipe without parmesan cheese?

While parmesan adds wonderful umami and saltiness, you can omit it if needed. The focaccia will still be delicious, just a bit less complex in flavor.

How important is the garlic oil in this recipe?

Garlic oil infuses the bread with a subtle but distinct depth of flavor that complements the caramelized onions beautifully. If you’re not a garlic fan, you can skip it or use plain olive oil, but the garlic oil definitely elevates the final taste.

Can I use fresh herbs other than thyme?

Yes! Rosemary is a classic alternative for focaccia and pairs wonderfully with caramelized onions. You could also try a mix of herbs like oregano or sage for a unique twist.

Final Thoughts

I cannot recommend this Caramelized Onion Focaccia Recipe enough—it’s a true crowd-pleaser and surprisingly easy to make, even if you’re new to baking bread. The combination of flavors and textures is pure magic, perfect for sharing with friends, family, or simply treating yourself. Give it a try, and soon this recipe will become a beloved staple in your kitchen just like it is in mine.