Green Bean Casserole from Scratch with Bacon - My Recipe Critic

Ingredients

• 2 lbs fresh green beans, trimmed and snapped into 2-inch pieces
• 1 lb cremini mushrooms, finely chopped
• 4 tbsp unsalted butter
• 1/4 cup all-purpose flour
• 1.5 cups whole milk
• 1/2 cup heavy cream
• 3 cloves garlic, minced
• 1/2 tsp ground nutmeg
• Salt and cracked black pepper to taste
• 2 large yellow onions, thinly sliced into rings
• 1/2 cup all-purpose flour
• 1/4 cup panko breadcrumbs
• 1/2 tsp smoked paprika