The Aromatic Foundation
Place a large, heavy-bottomed cast-iron skillet over medium heat. Pour in 3 tablespoons of extra virgin olive oil. Once shimmering, add the sliced onions and cubed potatoes. Sauté, stirring frequently.
Starting the potatoes early alongside the onions ensures they soften fully and release starches that naturally thicken the sauce, while thick-cut onions develop a sweet caramelized base without burning.
The onions should turn translucent with golden, caramelized edges, and the potatoes should lose their opacity.