- Heat oven to 425 degrees. You will want the rack in the oven to be set on the lower racks. Place a baking sheet in the oven while it heats.
- Put 1/2 teaspoon of butter in each well of the popover or muffin tin pan, set aside.
- In a blender, 1 tablespoon butter, eggs, milk, sugar, and blend until smooth, about 30 seconds. Set mixture aside.
- Place the prepared pan into the oven on the heated baking sheet and bake until the butter sizzles, it will take about 2 to 3 minutes. Remove the pan and the baking sheet from the oven. Pour the batter into each well of the pan, 3/4 full of batter.
- Return the pan and baking sheet to the oven. Bake until the popovers are puffed and the tops are starting to brown for about 20 minutes. Do not open the oven door during baking time. Reduce the oven temperature to 350 degrees and bake until the popovers are golden brown all over, about 15 minutes more. Do not open the oven door until the popovers have baked for at least 35 minutes.
- Serve immediately.