Roll out puff pastry to approximately 12 x 16 inches
1 sheet puff pastry
Place puff pastry on a baking sheet lined with parchment paper
Slice apples in half from the stem to the blossom end. Cut out core and slice apples into ⅛" slices. squeeze fresh lemon juice over apples to help prevent browning. Blot off any excess lemon juice.
4 apples, ½ lemon
Arrange apple slices on puff pastry overlapping apples and leaving a ¼" border.
Combine cinnamon and sugar. Sprinkle over apple slices.
3 Tablespoons sugar, ½ teaspoon ground cinnamon
Bake in a preheated 400 degree oven for 40 minutes.
Glaze
Mix apricot jam and water together in a bowl. Microwave for 15-20 seconds to help thin jam.
2 Tablespoons apricot jam, 1 teaspoon water
Brush jam over top of baked apples and crust.
Slide tart from parchment paper onto a hard, flat surface. Allow tart to fully cool before slicing.
Video
Notes
Make certain oven is fully preheated before baking tart
Select baking apples similar in size
Slice apples in consistent slices
While tart is still warm, slide tart off parchment paper onto a flat surface
Allow tart to fully cool and slice into pieces with a pizza cutter or a knife