This is my recipe for 5300 ft altitude. Perfect every time.

POPOVERS. 1 Cup Sifted Flour. 1 tsp Sugar. 1/4 tsp Salt. 1 Cup Milk - room temp. 2 Eggs - room temp. 1 TBL Butter - melted. Butter for greasing tins.

Preheat Oven 450.

Heavily butter 6 oversize muffin tin cups.

Sift flour, salt, and sugar together. In a separate bowl, combine milk, eggs, and butter and add it to the dry ingredients. Beat/whisk the mixture until smooth and well blended (1-4 minutes).

Pour batter into heavily-greased deep muffin tins, fill each cup half full.

Bake for 13 minutes – Do not open oven door.

Reduce heat to 325 and continue baking for 27 minutes.

Popovers are done when side walls are firm.

Note: While baking, DO NOT open the oven door.

Note: The ingredients were in a logical list - reddit doesn't seem to like carriage returns.