Step 1

Pre-heat oven to 425 degrees.

Step 2

Place cast iron in oven for 10 minutes to pre-heat.

Step 3

Make dijon topping my mixing all the ingredients together in a small bowl.

Step 4

Place salmon filets on a plate and pat dry with paper towels.

Step 5

Add dijon topping to the tops of salmon filets making sure to cover the entire top.

Step 6

Once the cast iron skillet is pre-heated, remove it from the oven with oven mitts.

Step 7

Carefully place salmon skin side down in skillet and place in the oven on middle rack.

Step 8

Cook salmon for 15 minutes or until it is cooked all the way through with an internal temperature of the thickest part reaching about 145 degrees.

Step 9

Once fully cooked add lemon slices to top of salmon and serve immediately.