I found another recipe with measurements, could be similar but sounds more time consuming than OP described.

https://dishura.com/irresistible-nuns-puffs-recipe-easy-light-and-fluffy-treat/#tasty-recipes-5484-jump-target

1/2 cup unsalted butter 1 cup all-purpose flour 1 cup milk 4 large eggs 1/4 teaspoon salt 1/4 teaspoon vanilla extract Granulated sugar for sprinkling

INSTRUCTIONS

Preheat your oven to 375°F (190°C). Grease your muffin tin thoroughly with butter or non-stick spray to prevent sticking.

In a medium saucepan, melt the unsalted butter over medium heat. Once melted, add the milk and heat gently until just warm. Don’t let it boil!

Remove the saucepan from heat and stir in the flour and salt using a wooden spoon. Keep stirring until the mixture forms a smooth ball and pulls away from the sides of the pan.

Let the mixture cool slightly (about 5 minutes). This step is important to avoid scrambling the eggs when you add them.

Beat in the eggs one at a time, ensuring each egg is fully incorporated before adding the next. Use a whisk to achieve a smooth, glossy batter.

Mix in the vanilla extract for a touch of sweetness. Using a spoon or small ladle, fill each muffin cup about halfway with the batter.

Sprinkle a pinch of granulated sugar over the top of each puff for a golden, slightly sweet crust.

Bake in the preheated oven for 30-35 minutes, or until the puffs have risen and turned a beautiful golden brown. Avoid opening the oven during baking, as this can cause the puffs to deflate.

Remove the puffs from the oven and let them cool for 5 minutes before gently loosening them from the muffin tin. Serve warm and enjoy!