In a bowl mix together diced strawberries and sugar. Let sit for 30 minutes to 2 hours until the strawberries and juicy.
Using an electric mixer beat heavy cream until soft peaks. Add powdered sugar and vanilla extract and beat until stiff peaks. Refrigerate until ready to use.
To make pancakes mix together flour, baking soda, and salt. In a separate bowl mix together butter, sugar, egg, vanilla, and buttermilk until well blended. Add to flour mixture and mix until well blended.
Heat griddle to Medium high heat, about 350 degrees F. Spray with non-stick spray
Scoop about 1/4 cup of batter onto the hot griddle. Cook for 2-3 minutes until there are little bubbles over the surface. Flip and cook for an additional 1-2 minutes. Remove and continue with the remaining batter.
To serve top pancake with whipped cream and strawberries.