Make the mac and cheese. Mix in the tomato paste and let it chill overnight.
To Bake: Mix everything under breadcrumbs.
Remove the mac from refrigerator. Dip a round bottom 1/4 cup or smaller round bowl type container in a bowl water to wet the cup. Pack 3 to 4 tablespoons worth mac in the container. sprinkle breadcrumb mixture on the open end of the cup and press to stick the breading as well as pack the mac well. Tap to release onto a baking sheet. Dip the cup in water again to rinse and wet and Repeat for the rest of the mac. Sprinkle breadcrumb mixture liberally on the mac balls and press. Spray oil on the balls.
Alternatively, use your hands to make balls of the mac, place in breadcrumb mixture to coat and then place on baking sheet. You can freeze the balls for 10 minutes at this point. I usually dont because I can't wait :). Pre-heat the oven to 450 degrees F / 230ºc. Spray oil on the balls.
Bake for 15 to 17 minutes at 450 degrees F / 230ºc or until crisp to touch. Drizzle with sriracha and serve.
Notes
The mac balls can also be fried. Make sure to pack them well and freeze for 15 to 30 minutes before frying. Nutritional values based on one serving