Step 1

Preheat oven to 350F.

Step 2

In a frying pan over medium heat, melt butter and saute onions.

Step 3

Add garlic, carrots and mustard powder when onions are translucent.

Step 4

When carrots are soft, remove from heat.

Step 5

In a casserole dish pour in salmon, onion mixture, olives, feta cheese, and lemon juice. Mix well so that salmon is flaked apart, and spread evenly.

Step 6

Top with mashed potatoes.

Step 7

Put in oven to heat through salmon (everything is already cooked at this point). If desired, broil until potatoes are golden brown on top.