Macaroni and Cheese with Tomatoes

2 cups macaroni
2 tomatoes
2 tablespoons butter
1/2 pint milk
1 heaping tablespoon flour
1/2 teaspoon salt
Pinch of pepper
1/4 teaspoon dried mustard
2 cups grated cheese

Cook macaroni. Slice tomatoes.

Whisk flour and milk together in a bowl.

Melt butter in a saucepan. Add milk and flour mix. Bring to boil, then simmer for 2-3 minutes. Season with salt, pepper, mustard and half the cheese. Add macaroni and mix well. Pour mixture into pie dish. Top with layer of tomatoes and rest of cheese. Put in warm oven until cheese is toasted.