Chile Rellenos con Pipian Verde

Name: Chile Rellenos con Pipian Verde
Ingredients: 2 Tablespoons butter, divided; 3/4 Cups pumpkin seeds; 1 Pound tomatillos; 2 Tablespoons diced onions; 3 cloves garlic; 1/4 Cup cilantro; 4 serrano chiles; 1 poblano pepper, seeded, roasted, and peeled; 3/4 Cups chicken stock; Salt, to taste; 1 Cup corn oil, divided; 1 1/2 Pound roasted tomatoes, puréed; 2 bay leaves; 1/4 Teaspoon black pepper; 2 Tablespoons garlic oil; 2 onions, finely diced; 8 poblano peppers, roasted, seeded, and skinned with stem intact; 1 1/2 Pound cooked and shredded chicken; 1 Pound queso asadero, also known as Oaxaca cheese; 1 Cup flour; 1 Cup grated cotija cheese