Smoky pasilla chiles stuffed with picadillo or cheese deliver deep, complex flavors. This protein-rich, family dish works beautifully for healthy meals with a keto-friendly cheese filling.
Roast the pasilla chiles directly over an open flame or under the broiler until the skins are blistered and charred, turning frequently for even roasting.
Place roasted chiles in a plastic bag or cover them with a cloth to steam for 10 minutes, which helps loosen the skins.
Carefully peel off the skins without tearing the chiles, then make a lengthwise slit in each chile and remove the seeds, keeping the stems intact for easy stuffing.
Stuff each chile generously with the queso fresco (or Monterey Jack cheese), pressing the filling in gently and pinching the slit closed.
Separate the eggs; beat the egg whites until stiff peaks form, then gently fold in the yolks for a light batter.
Heat vegetable oil in a large skillet over medium-high heat. Dredge the stuffed chiles lightly in flour to coat, then dip them in the egg batter.
Fry the battered chiles until golden brown on both sides, 2–3 minutes per side, then transfer to a paper towel–lined plate to drain excess oil.
Season the fried chiles with kosher salt, black pepper, cumin, and garlic powder while still warm. Serve immediately.