Preheat the oven to 350°F. You’ll need this ready so it’s hot when the enchiladas go in after the pressure cooker step.
In a saucepan over medium heat, melt butter. When it’s melted, stir in the flour and cook for about a minute. This is your roux that thickens the sauce.
Gradually whisk in chicken broth along with garlic powder and onion powder. Keep stirring till the sauce thickens, usually around 5 minutes.
Remove from heat and mix in sour cream and salsa verde. This white sauce is creamy and tangy, kinda irresistible.
Now grab a big bowl. Combine shredded chicken with half the monterey jack cheese and a third of the white sauce. Mix till its all incorporated.
Fill each tortilla with a good scoop of chicken mixture, then roll 'em up. Place cooled rolled tortillas seam-side down inside a greased baking dish. Don’t crowd them or sauce can leak out.
Pour the rest of the white sauce over the tortillas, spread it out kinda evenly. Then sprinkle the remaining monterey jack cheese on top.
Bake for 25-30 minutes until the cheese is bubbly and kinda golden. That’s when you know it’s ready to pull out and enjoy.