Make the vegan buttermilk. Add the soy milk and vinegar to a small bowl or a measuring cup. Whisk lightly then set aside for 5 to 10 minutes.
Dice your strawberries and bananas. Set aside.
Mix the dry ingredients: flour, baking powder, and salt in a medium bowl.
Once the milk and vinegar mixture is slightly curdled, add the oil, vanilla, and maple syrup to the milk and vinegar mixture. Whisk to mix well then add the wet ingredients to the flour mixture and stir until just combined. Gently fold in the diced strawberries and banana slices.
Heat a griddle or large skillet over medium heat to low heat. Spray the hot pan or griddle lightly with oil. Using a quarter cup measuring cup, scoop the pancake mix onto the hot griddle. Spread out some if needed, but not too thin! Let sit for 3-5 minutes until the bottom side is browned and the top is bubbly and somewhat set. Flip and cook the other side for another couple of minutes for the perfect pancake. Repeat with the remaining batter.