Making Lemon Sugar Tea-Time Croissants may seem daunting, but following these simple steps will guide you through the process effectively:

1. Prepare the Dough: In a large mixing bowl, whisk together the flour, granulated sugar, salt, and instant yeast.
2. Add Butter: Add the cubed cold butter to the flour mixture. Use your fingers or a pastry cutter to blend until the mixture resembles coarse crumbs.
3. Mix Wet Ingredients: In a separate bowl, combine the milk, egg, lemon zest, lemon juice, and vanilla extract. Mix well.
4. Combine Mixtures: Gradually pour the wet ingredients into the dry mixture, stirring with a fork until the dough begins to come together.
5. Knead the Dough: Transfer the dough onto a floured surface and knead gently until smooth. Form it into a ball, wrap in plastic wrap, and refrigerate for 30 minutes.
6. Roll Out the Dough: After chilling, roll the dough into a rectangle about 1/4 inch thick.
7. Cut and Shape: Cut the dough into triangles (about 4 inches wide at the base). Starting from the wide end, roll each triangle tightly towards the tip to form a croissant shape.
8. Prepare for Baking: Place the rolled croissants on a baking sheet lined with parchment paper. Cover lightly with a clean towel and let them rise for about 20 minutes.
9. Preheat the Oven: While the croissants are rising, preheat your oven to 375°F (190°C).
10. Bake: Bake the croissants in the preheated oven for 20-25 minutes until golden brown.
11. Cool and Dust: Once baked, remove from the oven and allow them to cool for about 10 minutes. Dust with powdered sugar before serving.

Following these steps will help you create a batch of incredible Lemon Sugar Tea-Time Croissants that are sure to impress.