1-1) Make the lemony syrup and poach the apples: First Step: In a large pot, combine 2 cups water, juice of 1/2 a lemon, and 1 cup granulated sugar. Heat over medium-low until the sugar dissolves and the water begins to lightly boil, then reduce heat to simmer.Second Step: Peel and core the 4 Golden Delicious apples, removing all seeds and enlarging the center cavity for filling.Third Step: Place the peeled apples upright in the simmering syrup. Poach until the bottoms soften, then turn apples upside down.Fourth Step: Continue cooking until the apples have a slight give but are not falling apart, about 20 minutes.Final Step: Remove apples and set aside. Turn off heat but keep syrup. Let syrup cool, then refrigerate until serving.

2-2) Chill the apples so they hold shape: First Step: Cool apples slightly, then cover with plastic wrap.Second Step: Refrigerate for 20 to 30 minutes until completely chilled.Third Step: Keep syrup refrigerated too, since you’ll pour it over the apples right before serving.

3-3) Mix the walnut filling (wet sand texture): First Step: In a bowl, mix 1 cup ground plain biscuits, 2 cups ground walnuts, and 1 tablespoon vanilla sugar.Second Step: Pour 1/2 cup hot milk over the mixture and stir until combined.Third Step: The filling should be damp but not runny. If too wet, add more biscuits or walnuts until it feels like a thick crumb.Final Step: Stuff each apple with the walnut filling and refrigerate until ready to serve.

4-4) Serve cold for the best taste: First Step: Serve each apple in a bowl.Second Step: Pour syrup over the apples.Third Step: Add whipped cream on top.Fourth Step: Sprinkle with ground walnuts.Final Step: Enjoy cold.