2tbspbutter and a bit more to butter the baking dish
1cupwhite onion, slivered
3(about 3/4 lb)poblano chiles, charred, skinned, stemmed, seeded, and sliced
1 1/2cuproma tomatoes, chopped
1cupcorn kernels, fresh, thawed from frozen or canned and drained
1tspkosher salt or to taste
1/2cupMexican style cream, or Latin, creme fraiche or heavy cream
1/2cupqueso fresco, can substitute with farmers, or ricotta cheese
1 1/2cupOaxaca cheese, shredded
Place the butter in a saute pan set over medium heat. Once it melts, add the slivered onion and allow it to sweat for about 12 minutes, until translucent and soft. Increase the heat to medium-high, add the tomatoes and cook for about 2 minutes. Stir in the chile poblano rajas or strips, corn, salt and black pepper and cook for about 3 more minutes. Add the cream and queso fresco and continue cooking, stirring from time to time, until the sauce thickens a bit and seasons, for 2 to 3 minutes.
Preheat the oven to 375 degrees. Butter a 8 x 11 or 9 x 9 baking dish. Layer the white rice in the baking dish and press it down gently with a spatula. Pour the poblano mixture on top. For the last layer, sprinkle the shredded cheese on top.
Bake the casserole in the oven for about 20 minutes or until the cheese has completely melted. Serve hot.