Culinary Collage

Yes, you read that correctly 😀 Classic Green Bean Casserole gets a glow up with these crispy homemade onion petals and a creamy, bloomin onion’ inspired sauce! I created this original recipe for my sister, who doesn’t like mushrooms, but this green bean casserole is sure to be a hit among mushroom avoidants and mushroom lovers alike!

Yields: 6-8 servings Prep time: 25 mins | Cook time: 35 mins

Ingredients

For the Deep-Fried Onion Petal Topping:

• 2 small Vidalia or sweet onions, cut into 1-inch “petals” (wedges separated)
• 1 ½ cups All-purpose flour
• 2 tsp Smoked paprika
• 1 tsp Ground cumin
• 1 tsp Garlic powder
• ½ tsp Cayenne pepper
• ½ tsp Dried oregano
• 1 cup Buttermilk
• 1 Egg, beaten
• Neutral oil for frying (Canola, Vegetable, or Peanut oil)

For the Green Beans & “Bloomin’ Sauce” Base:

• 1.5 lbs Fresh green beans, trimmed and blanched
• 5 tbsp Unsalted butter
• ¼ cup All-purpose flour
• 1 ½ cups Chicken stock (preferably homemade)
• ½ cup Heavy cream
• 1 1/2 tbsp Prepared horseradish
• 1 tbsp tomato paste
• 1 tsp Worcestershire sauce
• 1 tsp Smoked paprika
• ½ tsp dried thyme
• ½ tsp Garlic powder
• Salt and black pepper to taste

Instructions

1. The Deep-Fried Petals

• The Setup: Fill a heavy-bottomed pot or Dutch oven with about 2–3 inches of oil. Heat to 350°F (175°C).
• The Dredge: In one bowl, whisk the flour, smoked paprika, cumin, garlic powder, cayenne, and oregano. In a second bowl, whisk the buttermilk and egg together.
• The Double-Dip: Toss the onion petals in the flour, dip them into the buttermilk mixture, and then toss them back into the flour for a thick, craggy coating.
• The Fry: Fry the petals in batches (do not crowd the pot!) for 2–3 minutes until they are deep golden brown and crispy. Drain on a wire rack or paper towels and sprinkle immediately with a pinch of salt. Set these aside.

2. The Scratch-Made Sauce (No Mushrooms!)

• In a large oven-safe skillet over medium heat, melt the butter.
• Whisk in the flour and cook for 2 minutes to toast the flour slightly without browning it.
• Slowly whisk in the chicken stock, followed by the heavy cream. Continue whisking until the sauce is smooth and starts to thicken (about 4–5 minutes).

3. Infuse the “Bloomin’” Flavors

• Whisk in the horseradish, ketchup, Worcestershire sauce, smoked paprika, thyme, and garlic powder.
• Taste and add salt and pepper. The sauce should be creamy and savory with a signature “zing” from the horseradish and earthiness from the cumin.

4. Assemble and Bake

• Preheat your oven to 375°F.
• Stir the blanched green beans into the sauce until they are well-coated.
• If using the skillet, leave them there; otherwise, transfer to a 9×13 baking dish.
• Bake for 15–20 minutes until the sauce is bubbling around the edges.

5. The Finishing Touch

• Remove the casserole from the oven. Pile the deep-fried onion petals generously over the top.
• Place back in the oven for 3–5 minutes. This ensures the beans stay hot while the petals stay crisp.

Pro Tips for Success

• Keep it Hot: Use a kitchen thermometer to keep your frying oil at 350°F. If the oil is too cold, the onions will be greasy; if it’s too hot, the breading will burn before the onion softens.
• Fresh is Best: Using fresh green beans that have been blanched (boiled for 3 minutes then shocked in ice water) gives the casserole a “snap” that canned or frozen beans just can’t match.