Hazırlanışı
1Preheat the oven to 375 degrees F (190 degrees C).
2Place red onion slices and crema in separate small bowls. Zest limes into another small bowl. Halve limes and squeeze juice into a fourth small bowl.
3Stir 1 teaspoon lime juice into the bowl of crema. Add the remaining lime juice to the bowl with the red onions; stir in 1/4 teaspoon salt and let marinate at room temperature until pickled, at least 20 minutes.