Dredging tender fish fillets in an herby coating and flash searing them along with green beans and cherry tomatoes makes an easy and healthy dinner. We like to use thin green beans -- they cook much faster.
Combine the flour, oregano and parsley in a shallow dish. Season with salt and pepper.
Place a large skillet over medium-high heat. Dredge the fish in the flour mixture, shaking off the excess. Melt 3 tablespoons butter in the skillet, then add 2 fillets and cook until golden brown on the bottom, about 4 minutes. Flip and cook through, 1 to 2 more minutes. Transfer to a plate and keep warm. Repeat with the remaining 2 fillets.
Add the green beans and garlic to the skillet and cook about 2 minutes. Season with salt and pepper, then add the tomatoes and cook until just softened, about 1 more minute. Stir in the lemon juice and 1/4 cup water, then cover and cook until the beans are tender, about 3 more minutes. Remove from the heat and stir in the remaining 1 tablespoon butter until just melted.
Divide the fish and vegetables among plates. Garnish with oregano.