Homemade Mushroom Green Bean Casserole
Serves 2
0 mins total
A from-scratch upgrade to the classic holiday casserole—no canned soup, just real ingredients and a silky mushroom cream sauce that tastes so much better than anything from a can.
For the casserole:
lbfresh green beanstrimmed + halved
tbspbutter
ozmushroomschopped (baby bella or cremini work best)
yellow oniondiced
–3 cloves garlicminced
tbspgluten-free flouror all-purpose
cuphalf & halfor whole milk
tspsalt
tspblack pepper
tsponion powder
tspdried thymeoptional but delicious
cupshredded parmesanoptional for extra richness
To top:
cupcrispy fried onionsstore-bought or homemade
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Blanch the green beans: Bring a large pot of salted water to a boil. Add green beans and cook for 5 minutes.
Drain and rinse with cold water to stop the cooking. This keeps them crisp and bright.
Make the homemade “cream of mushroom”: In a large skillet: Melt butter → add mushrooms and onions. Sauté until golden, about 6–7 minutes.
Add garlic and cook 1 more minute.
Sprinkle the flour over everything and stir to coat.
Slowly whisk in chicken broth.
Add half & half.
Season with salt, pepper, onion powder, and thyme.
Simmer 4–6 minutes until thickened and creamy.
Stir in parmesan if using.
Assemble
Assemble: Add blanched green beans into the mushroom sauce and toss to coat.
Transfer everything to a greased 9×13 baking dish.
Bake: 375°F for 20 minutes until bubbly.
Top with crispy fried onions.
Bake for an additional 5-10 minutes until bubbly and golden on top.