Slow Cooker Macaroni and Cheese

INGREDIENTS

2 1/4 cups

dry elbow macaroni

1 cup

cheddar cheese (shredded)

1 cup

Gruyere cheese (shredded)

8 oz

American cheese (thinly sliced and roughly chopped)

1 1/2 cups

milk

12 oz

evaporated milk

1 1/2

tsps worchestershire sauce

3/4 tsp

dry mustard

salt and pepper (to taste)

tbsps unsalted butter

2/3 cup

panko crumbs