Preheat oven to 425 ℉. Generously coat a half sheet pan with nonstick spray, making sure to get the sides. Set aside.
In a large bowl, whisk together the flour, baking powder, baking soda, salt, and sugar.
3 cups all-purpose flour, 3 tsp baking powder, 1½ tsp baking soda, 1 tsp salt, 3 tbsp granulated sugar
Add in the milk, melted butter, eggs, and vanilla. Whisk until smooth.
3 cups milk, 4½ tbsp melted butter, 3 large eggs, 1½ tsp vanilla extract
Pour batter onto the prepared pan. Tap the pan on the counter a few times to even out the batter. Sprinkle any toppings you want to use on top of the pancakes.
sliced bananas, blueberries, chocolate chips, sprinkles, strawberries- for topping
Place the sheet pan in the oven and bake for 15-20 minutes, until the pancakes are fully set and golden brown.
Allow the pancakes to cool slightly and then cut into slices. Serve with maple syrup and extra toppings if you'd like!