1-First, whisk together the 2 cans of cream of mushroom soup, 1/3 cup of milk, 1/2 teaspoon salt, and 1/2 teaspoon pepper until well blended. This step ensures a smooth, creamy base that’s full of flavor. For more tips on easy variations, check out our section on advanced tips and variations for innovative ideas.

2-Gently fold in the 3 cans of green beans (drained) and half of the 6 ounces of French fried onions (about 3 ounces) into the mixture. Spray your slow cooker with non-stick cooking spray and spread the mixture evenly at the bottom for even cooking. For more on storage after preparation, you can refer to our guide on how to store your casserole.

3-Cover the slow cooker and cook on low for 2-3 hours or on high for 1 to 1.5 hours, stirring halfway if possible. Before serving, remove the lid and top with the remaining 3 ounces of French fried onions for that irresistible crunch. The total preparation time is about 5 minutes, with a cook time of 2 hours, making the whole process around 2 hours and 5 minutes.