Apple Pie Bars
- 3 ¼ c. unbleached all-purpose flour (RECOMMEND WEIGHING)
- 1 ½ tbsp granulated sugar
- ½ tsp salt
- 1 ½ c. salted butter (cold)
- 1 large egg yolk (reserve white for egg wash)
- ⅔ c. milk (enough to make a scant ¾ cup with yolk)
- 1 ¼ c. granulated sugar
- 1 ½ tsp ground cinnamon
- 3 tbsp quick-cooking tapioca pearls (see notes for other options)
- 8–10 large tart apples (about 11 to 12 cups sliced)
- 1 egg white (reserved from crust)
- 1 tbsp water
- ¾ c. confectioner's sugar (sifted)
- 1 tsp vanilla extract
- 1–2 tbsp milk
- ⅛ tsp salt
- Make the Crust:
- Make the Filling:
- Assemble the Bars:
- Bake the Bars:
- Cool and Drizzle: