Step 1

Preheat oven to 425° F. Spray 13 x 9-inch or 3-quart casserole dish with nonstick cooking spray. Fill large bowl half full with ice cubes; fill with cold water.

Step 2

Bring 4 quarts of water to a boil in large saucepan; add green beans and salt. Cook, stirring occasionally, for 5 minutes or until crisp-tender. Drain and immediately drop into ice-cold water to stop the cooking. Once cool, drain again.

Step 3

Melt butter in same saucepan; add mushrooms and garlic. Season with pepper. Cook, stirring frequently, for 5 minutes or until mushrooms are tender. Stir in flour; cook, stirring frequently, for 1 minute. Stir in water; bring to a boil. Reduce heat to medium; add evaporated milk and bouillon. Cook, stirring occasionally, for 10 minutes or until sauce is thickened. Add green beans; stir to coat. Transfer to prepared casserole dish. Sprinkle evenly with French fried onions.

Step 4

Bake for 15 minutes or until onions are golden brown and sauce is bubbling around edges. Serve immediately.