09/07/2026
Red onion and anchovy tart!
Based on pissaladière, but extra ;)
1 puff pastry sheet, thawed
4 lb red onions, thinly sliced
3 tbsp olive oil
1 tbsp unsalted butter
2 tbsp anchovy paste
1 tsp fresh thyme leaves
1 tsp sugar
1 tbsp balsamic vinegar
11/2 cup fontina cheese, shredded
1/2 tsp kosher salt
1/4 tsp black pepper, freshly ground
1/3 cup pitted niçoise olives or halved kalamatas
Anchovy fillets, or anchovy fillet wrapped capers (optional)
Heat 3 tbsp olive oil and 1 tbsp unsalted butter in a large heavy skillet over medium-low heat. Add 4 lb red onions, thinly sliced and 1/2 tsp kosher salt, stirring to coat. Cook low and slow, stirring occasionally, until deeply golden and jammy. (~45 minutes)
Stir in 2 tbsp anchovy paste, 1 tsp sugar, tbsp balsamic vinegar, and 1/4 tsp black pepper, freshly ground into the caramelized onions. Cook for another 2-3 minutes until fully combined and fragrant. Remove from heat and let cool slightly.
Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
Roll out 1 puff pastry sheet, thawed on the prepared baking sheet. Using a fork, dock the pastry all over (leaving a small border) to prevent excessive puffing.
Spread the cooled onion-anchovy mixture evenly over the pastry, staying within the border. Dot pitted niçoise/kalamata olives over the onions along with anchovy fillets. Sprinkle 1 tsp fresh thyme leaves evenly over the top, then scatter 1 1/2 cup fontina cheese, shredded across the surface.
Bake until deeply golden and the cheese is bubbling, allow to cool for 10-15 minutes before serving. Serve with extra fresh thyme and a side salad.