Step 1: Preheat your oven to 425°F (220°C). This high temperature is crucial for creating that signature rise.
Step 2: Lightly spray your popover pan with non-stick baking spray. This will help the popovers release easily once they are baked.
Step 3: In a mixing bowl, whisk together the all-purpose flour, baking powder, and salt until evenly combined.
Step 4: In another bowl, whisk the eggs and milk together until smooth. Gradually add the melted butter, mixing well.
Step 5: Pour the wet ingredients into the dry mixture, stirring gently until just combined. Be careful not to overmix; some lumps are okay!
Step 6: Pour the batter into each cup of the popover pan, filling them about halfway. This allows room for the popovers to rise.
Step 7: Place the pan in the preheated oven and bake for about 25-30 minutes or until the popovers are puffed and golden brown. Avoid opening the oven door during the first 20 minutes to ensure they rise properly.
Step 8: Once baked, remove the popovers from the oven. Let them cool for a minute before gently removing them from the pan. Serve warm with blackberry jam and a sprinkle of sugar for sweetness.