Make the batter: In a bowl, whisk flour, 1 tbsp granulated sugar, and salt. Whisk in eggs until a thick paste forms. Gradually whisk in milk and water until smooth, then whisk in 2 tbsp melted butter and 1 tsp vanilla. Strain through a fine-mesh sieve and let rest 30 minutes at room temperature.
Macerate strawberries: In another bowl, toss the sliced strawberries with 2 tbsp granulated sugar and lemon juice. Let stand 15–30 minutes, stirring once, until juicy.
Whip the cream: Beat heavy cream with 2 tbsp powdered sugar and 0.5 tsp vanilla to soft peaks, 2–4 minutes. Refrigerate until needed.
Heat the pan: Warm an 8–10 inch nonstick skillet over medium heat. Lightly brush with some of the melted butter for the pan.
Cook crepes: Pour about 0.25 cup batter into the center, tilting the pan to coat in a thin, even layer. Cook 45–60 seconds until edges look dry and the underside is lightly golden, then flip and cook 15–30 seconds more. Transfer to a plate and repeat, brushing the pan with butter as needed, stacking crepes and keeping them covered with a clean towel.
Assemble and serve: Spoon some macerated strawberries and their juices onto each crepe, add a dollop of whipped cream, and fold into quarters or roll. Dust with powdered sugar and serve immediately.