Step 1

Preheat oven to 350 degrees F.

Step 2

In a sauce pan melt the butter, add in the flour and blend until everything is incorporated.

Step 3

Whisk in the half and half and keep stirring until combined.

Step 4

Season the milk mixture with salt and pepper.

Step 5

Bring the milk mixture to a boil, stirring occasional.

Step 6

Once it comes to a boil, lower the heat and stir in ½ cup of Cheddar cheese and the Colby Jack cheese.

Step 7

Layer half the potatoes into a greased baking dish, add half the cheese mixture, layer the second half of the potatoes, and top with the rest of the cheese mixture.

Step 8

Add remaining ½ cup of Cheddar cheese on top.

Step 9

Bake in the oven for 1 hour at 350 degrees.

Step 10

Enjoy!