It's similar to the mac and cheese recipe from Outback everyone raves about, but easily made at home: creamy, cheesy, and ready in just 30 minutes.
Preheat oven to 375°F. Bring a pot of water to a boil and add olive oil and a pinch of salt. Add pasta and boil according to package directions.
Melt butter in a pot and add flour. Stir until combined. Add milk and whisk until creamy. Remove from heat and add cheeses, stirring until melted.
Add pasta with the sauce and mix. Spray dish with cooking spray and add macaroni and cheese, smoothing into an even layer.
Melt remaining butter in a saucepan. Add breadcrumbs to saucepan and cook until golden, stirring constantly.
Place tomato slices on top of macaroni (optional) and then sprinkle the breadcrumb mixture over top.
Bake for 30 minutes or until bubbling and the edges are starting to brown. Serve and enjoy!