🇭🇺 Hungarian Grated Jam Tart (Reszelt Sütemény)

🛒 Ingredients:

• 300 g (2 ½ cups) all-purpose flour
• 150 g (⅔ cup) sugar
• 150 g (⅔ cup) butter (cold)
• 1 egg
• 1 teaspoon baking powder
• 1 teaspoon vanilla extract
• Zest of 1 lemon (optional)
• 300–400 g (about 1–1½ cups) jam (apricot, raspberry, or your favorite)
• Pinch of salt