1
Preheat oven to 400 degrees.
2
Place butter and olive oil in large pot over medium heat. Once melted whisk in flour and stir until smooth and beginning to bubble.
3
Whisk milk into roux and continue to stir until smooth and thickened, approximately 8 minutes.
4
Mix in cheese until incorporated and remove from heat. Stir in all remaining ingredients except breadcrumbs until evenly mixed.
5
Place mixture into a 9”x11” casserole dish. Sprinkle top evenly with breadcrumbs and bake for 25 minutes or until top of mac and cheese is golden brown and bubbly.
