Tuna, Spinach And Potato Pie

• None None FOR THE POTATO AND CELERIAC MASH
• 14 oz potatoes, peeled and coarsely chopped
• 10 oz celeriac, peeled and coarsely chopped
• 2 tbsp milk
• 2 tbsp butter
• 1/4 cup finely grated Parmesan cheese
• None None FOR THE FILLING
• 3 tbsp butter
• 1 None onion, thinly sliced
• 1/4 cup flour
• 5 oz baby spinach leaves
• 3 cans (5 oz each) tuna in water, drained
• 2 cups milk, warmed
• 2 tbsp lemon juice

1. For the potato and celeriac mash, boil, steam or microwave potatoes and celeriac, separately, until tender. Drain. Place in large bowl; mash with milk and butter until smooth. Stir in cheese. Season to taste. Cover to keep warm.
2. For the filling, melt butter in medium saucepan. Cook onion, stirring, for 5 mins, or until softened. Add flour and cook, stirring, until mixture thickens and bubbles. Gradually add milk; stir until mixture boils and thickens. Remove from heat; stir in spinach, tuna and lemon juice. Season to taste.
3. Preheat the broiler. Spoon tuna mixture into shallow 1 1/2-quart baking dish. Top with potato and celeriac mash. Broil until lightly browned.

mash, potatoes, milk, butter, parmesan cheese, filling, butter, onion, flour, baby spinach, tuna, milk, lemon juice

Taken from recipes-plus.com/api/v2.0/recipes/35835 (may not work)