1. Prepare the Peaches:
- In a large bowl, toss the peach slices with sugar, lemon juice, and vanilla extract. Let sit at room temperature for at least 30 minutes to release their juices.
2. Make the Biscuits:
- Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
- In a large bowl, whisk together the flour, sugar, baking powder, and salt.
- Cut in the cold butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs.
- Stir in the heavy cream and vanilla extract until the dough just comes together. Do not overmix.
- Turn the dough onto a floured surface and pat it into a 1-inch thick rectangle. Use a round cutter or a glass to cut out biscuits and place them on the prepared baking sheet.
- Bake for 12-15 minutes, or until the biscuits are golden brown. Let cool slightly.
3. Make the Whipped Cream:
- In a chilled mixing bowl, beat the heavy cream, powdered sugar, and vanilla extract until soft peaks form.
4. Assemble the Shortcakes:
- Slice the biscuits in half horizontally. Place the bottom half on a plate, top with a generous scoop of the peaches and their juices, and add a dollop of whipped cream.
- Place the top half of the biscuit on top and garnish with more peaches and whipped cream if desired.
5. Serve:
- Serve immediately and enjoy this fresh, summery dessert!