Spray a 13x9 baking dish with nonstick cooking spray.
Place prepared green beans in a colander over large bowl and allow to drain.
Add 2 tablespoons of butter to a deep skillet and melt over medium heat.
Add the onions and mushrooms and cook for 5-8 minutes, or until the vegetables are softened.
Transfer the drained green beans to a large bowl and add the cooked vegetables.
Add the remaining 3 tablespoons of butter to the skillet and melt over medium heat.
Add the garlic and stir for 30 seconds.
Stir in the flour and whisk for about minute. The mixture should resemble paste.
Slowly add the milk, whisking constantly. Continue to whisk until the mixture thickens and is bubbly.
Add in the chopped thyme and All Purpose Seasoning Blend.
Remove the skillet from the heat and stir in the cheddar cheese, whisking until the cheese is melted.
Pour the cheese sauce over the bean mixture and stir until everything is combined.
Transfer the mixture into the prepared pan, spreading it out in an even layer. Top with the French fried onions.
Bake for 20 minutes, or until the mixture is bubbly and the top is golden brown.
Notes
Double: Simply increase the ingredients proportionately to make this easy recipe for a crowd.
Add Bacon: Bacon bits, even saute your onions in the bacon grease for more flavor to the Green Bean Casserole without Mushroom Soup.
Alternate ingredient: Try adding a little chicken broth to this wonderful recipe.
Cheese: Try a sprinkle of parmesan cheese or cheddar cheese to the top of this great recipe making it a cheesy green bean casserole.
Beans: Make this Green bean casserole with French cut green beans are wonderful in this no soup version.
Make Ahead: Make casserole ahead of time just do not add the crispy topping until ready to bake this easy homemade casserole. Casserole can be stored in an airtight container.