Preparation
1. Preheat oven to 375°F.
2. In a large bowl, stir together the asparagus, mayonnaise, and cheese. Set aside.
3. In a saucepan over medium heat, melt the butter. Whisk in flour and cook a minute or two, whisking constantly.
4. Whisk in the milk and let the sauce come to a simmer, again whisking nearly constantly.
5. Once sauce has thickened, stir in onion and garlic powder, and season to taste with salt and pepper. Pour into bowl with asparagus and stir to combine.
6. Transfer mixture to a 9×13-inch baking dish and top with crushed crackers.
7. Bake until cheese is bubbly and crackers are golden brown, 40-50 minutes. If desired, broil for 1-2 minutes to further brown the top.
8. Enjoy!
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