• ½ cup milk
• 8 tbsp. unsalted butter, cubed
• ½ tsp. kosher salt
• 1 cup flour
• 4 eggs, at room temperature
• 6 oz. Gruyère cheese, grated

Heat oven to 425°.

Bring milk, butter, salt, and ½ cup water to a boil in a 4-qt. saucepan over high heat. Add flour; stir until dough forms. Reduce heat to medium; cook, stirring dough constantly with a wooden spoon, until slightly dried, about 2 minutes.

Transfer to a bowl; using a hand mixer, beat in 1 egg until smooth. Repeat with remaining eggs, beating each one at a time, until dough is smooth; stir in cheese.

Using a small scoop or tablespoon, drop balls of dough onto parchment paper-lined baking sheets.

Place in oven; reduce temperature to 375°.

Bake until golden brown, about 30 minutes.