Preheat oven to 500℉. Lightly spray an 18-by-13-inch rimmed baking sheet with cooking spray.
In a medium bowl, whisk together the salt, baking powder, baking soda, flour and sugar.
1 ¼ teaspoons Salt, 2 ½ teaspoons Baking Powder, 1 ⅛ teaspoons Baking Soda, 2 ½ Cups Flour, 2 ½ Tablespoons Sugar
In a separate bowl, whisk together the eggs and buttermilk. Switch to a wooden spoon and make a well in the middle of the dry ingredients.
3 Eggs, 2 ½ Cups Buttermilk
Pour in the wet ingredients and stir until almost completely combined. Once the flour is almost incorporated add the butter and fold together.
8 teaspoons Butter
Spread the batter in an even layer on the prepared baking sheet. Evenly sprinkle strawberries on top.
1 ¼ Cups Strawberries Slices
Transfer to the oven and immediately reduce temperature to 425℉. Bake the pancake until golden brown and a toothpick inserted in the center comes out clean, about 14 to 16 minutes.