Description

Sweet meets savory in these flaky, golden Upside-Down Onion and Gruyère Tarts with Hot Honey Drizzle. This easy recipe makes a perfect quick breakfast idea, impressive appetizer, or comforting dinner side. Buttery puff pastry holds caramelized onion slices and rich, melty Gruyère cheese, all crowned with a sweet-spicy drizzle of hot honey. Whether you’re hosting brunch or looking for new dinner ideas, these tarts check every box. The textures and flavors are irresistible—crunchy, gooey, sweet, and savory in every bite.

Ingredients

1 sheet of puff pastry, thawed
2 medium yellow onions, sliced into 1/2-inch rounds
1 tbsp olive oil or butter (for searing)
1 cup shredded Gruyère cheese
Fresh thyme sprigs (about 6 small sprigs)
Salt and freshly ground black pepper, to taste
2 tbsp hot honey (store-bought or homemade)
1 egg, beaten (optional, for egg wash)

Instructions

Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper and brush lightly with olive oil or butter.
Sear the onion slices in a skillet with olive oil for 1–2 minutes per side until lightly caramelized. Season with salt and pepper.
Place a sprig of thyme on the baking sheet, then top with an onion slice and a small mound of shredded Gruyère.
Cut puff pastry into six squares and lay one square over each onion-cheese pile. Press gently around the edges.
Brush the pastry tops with beaten egg if using.
Bake for 20–25 minutes, until pastry is puffed and golden brown.
Let cool for 2 minutes, then carefully flip each tart upside-down so the onion faces up.
Drizzle each tart with hot honey and garnish with fresh thyme.

Prep Time: 15 minutes
Cook Time: 25 minutes