Caramelized Onion and Balsamic Tomato Tarts

Flaky puff pastry dough topped with caramelized onions, 2 kinds of cheese, thyme, basil, and balsamic cherry tomatoes. Once baked, the dough turns golden brown and the tomatoes burst, turning sweet & delicious!

⏱️ 45 min 🔪 Prep: 15 min 🔥 Cook: 30 min 📊 Medium 👁️ 4 views
👨‍🍳 Start Cooking
Caramelized Onion and Balsamic Tomato Tarts Foto: Half Baked Harvest

Ingredients

4 servings
  • 2 tablespoons extra virgin olive oil
  • 1 yellow onion, thinly sliced
  • 1 teaspoon honey
  • kosher salt and black pepper
  • 1 g arlic clove, minced or grated
  • 2 tablespoon fresh thyme leaves, plus more for serving
  • 1 cup shredded sharp cheddar cheese
  • 1/2 cup shredded Havarti cheese
  • 1 sheet frozen puff pastry, thawed
  • 2 cups cherry tomatoes
  • 2 tablespoons balsamic vinegar
  • 1/4 cup fresh basil, chopped
  • 1 pinch crushed red pepper flakes
  • 1 egg, beaten
  • everything bagel spice, for sprinkling
  • fresh chopped chives

Steps

  1. 1. Preheat the oven to 425 degrees F. Line a baking sheet with parchment paper.2. Heat 1 tablespoon olive oil in a large skillet over medium-high heat. When the oil shimmers, add the onions and honey and cook 5 minutes, stirring occasionally until softened. Season with salt and pepper and continue cooking another 5-10 minutes or until the onions are golden and caramelized. Add the garlic, and thyme, cook another minute. Remove from the heat.3. In a bowl, combine the remaining 1 tablespoon olive oil, the tomatoes, balsamic vinegar, basil, crushed red pepper, and a pinch each of salt and pepper. 4. Lay the pastry sheet flat on a clean, floured surface. Gently roll the sheets out to stretch slightly. Cut each sheet into 4 squares and place onto the prepared baking sheet. Evenly top each square with onions, leaving a 1/4 inch border. Top with both kinds of cheese and then mound the tomatoes over the cheese, pressing them into the cheese to adhere slightly (see above photo). 5. Fold the edges of the pastry inward to enclose the tomatoes. Brush the edges of the pastry with beaten egg and sprinkle with everything spice. Transfer to the oven and bake for 20-25 minutes or until the pastry is golden and the tomatoes burst. Top with fresh thyme and chives.

Nutrition Facts (per serving)

Macronutrients

Calories95848% DV

*DV = Daily Value based on a 2,000 calorie diet

💰 Cost Estimate

Total Ingredients $2.76
Per Serving $0.69/serving
🏠 Save ~$5.53 compared to buying!
📋 Price Breakdown (13% ingredients detected)
IngredientAmountUnit PriceSubtotal
extra virgin olive oil 2 tablespoons - -
yellow onion 1 - -
honey 1 teaspoon - -
kosher salt and black pepper - - -
arlic clove 1 g - -
fresh thyme leaves 2 tablespoon - -
shredded sharp cheddar cheese 1 cup $1.88/170g $2.61
shredded Havarti cheese 0.5 cup - -
sheet frozen puff pastry 1 - -
cherry tomatoes 2 cups $0.75/kg $0.15
balsamic vinegar 2 tablespoons - -
fresh basil 0.25 cup - -
pinch crushed red pepper flakes 1 - -
egg 1 - -
everything bagel spice - - -
fresh chopped chives - - -

*Estimated market prices, may vary by region

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