Baked Fish with Lemon Cream Sauce (One Baking Dish!)

INGREDIENTS

Garlic cloves

Parsley and lemon, Fresh slices

1 1/2 tbsp

Shallots / scallions

1 tbsp

Dijon mustard

1 1/2 tbsp

Lemon juice

Salt & pepper

50 g

Butter, unsalted

1/4 cup

Thickened cream, heavy

X 150- 180g / 5 - 6 oz fish fillets (, about 1.5cm / 1/2" thick, skinless and boneless (note 1))