One-Pan Mac 'n' Cheese Recipe | Myrecipes

Toast bread crumbs: In a large frying pan over medium heat, cook crumbs with oil and 1/8 tsp. each salt and pepper, stirring often, until crumbs begin to crisp, 4 to 5 minutes. Add paprika and cook, stirring, until crunchy, 2 to 4 more minutes. Pour from pan to a bowl and let cool; then seal in a lidded container or resealable plastic bag. Make sauce: Melt butter in a medium saucepan over medium-high heat. Add flour and remaining 1 tsp. salt and 1/2 tsp. pepper; whisk until bubbling and light tan, 1 1/2 to 2 minutes. Add milk and cook, whisk­ing, until sauce bubbles and thickens, 3 to 5 minutes. Remove from heat, add cheese, and whisk until melted. Let cool, then transfer to a lidded container and chill in refrigerator or cooler.