Bayam Krim dan Saus Poblano Panggang

Bahan-bahan (4 porsi)

• 1 tablespoons olive oil
• 4 g arlic cloves, peeled
• 1 onion, coarsely chopped
• 2 poblano peppers, cut into large strips
• 6 tablespoons butter
• 1/2 cup flour
• 2 cups milk (warm)
• 2 cups chicken broth (warm)
• 1 teaspoon salt
• 1 cup spinach leaves