Sorrel Frittata | Saveur

Ingredients

• 3 Tbsp. butter
• 3 cups loosely packed sorrel leaves, washed, stemmed, and cut into strips
• 1 shallot, peeled and chopped
• Salt
• 1⁄2 red bell pepper, stemmed, cored, seeded, and sliced lengthwise into strips
• Freshly ground black pepper
• 2 medium white mushrooms, trimmed and sliced
• 4 eggs
• 1-2 Tbsp. grated parmigiano-reggiano