Arroz Verde Al Horno

Name: Arroz Verde Al Horno
Ingredients: 1 x poblano chiles,seeds removed; 1 x Green Bell Pepper, seeds and ribs removed; 1/2 cup Cilantro Leaves, loosely packed; 1/4 cup epazote leaves, loosely packed; 5 x cloves of garlic, peeled and crushed; 2 cup Chicken Stock,low sodium; 4 tbsp unsalted butter; 1 cup Spanish Onion,chopped; 2 cup Long Grain Rice; 1 1/2 cup Oaxaca Cheese,grated; 1 1/2 cup Manchego Cheese,grated; 1 cup Heavy Cream