01 -
Preheat oven to 350°F and set rack in the center. In a large bowl, whisk together egg, parsley, tomato paste, dried oregano, salt, pepper, minced garlic, and water until blended.
02 -
Add ground beef, ground pork, bread crumbs, and grated Parmigiano Reggiano to the bowl. Gently mix with your hands just until combined, taking care not to overwork. Roll into golf ball–sized meatballs and arrange on a parchment-lined baking sheet.
03 -
Bake meatballs for 10 minutes, flip, then bake another 10 minutes until browned and nearly cooked through. Set aside.
04 -
In a large skillet, melt butter over medium heat. Add diced onion and sauté until soft, about 5 minutes. Stir in minced garlic and cook for 1 minute until fragrant.
05 -
Pour in marinara sauce and bring to a gentle simmer. Add sugar, season with salt and pepper, then stir in heavy cream. Simmer for 2 to 3 minutes to meld flavors.
06 -
In a small bowl, whisk flour and water until smooth. Pour the slurry into the simmering sauce, whisking quickly to avoid lumps. Let sauce thicken, then stir in dried oregano, paprika, and garlic powder.
07 -
While sauce is simmering, cook spaghetti in a large pot of salted boiling water according to package instructions until just shy of al dente. Drain well.
08 -
Add drained spaghetti directly into the sauce and toss to coat. Cook together over medium heat for 5 minutes, gently stirring to allow pasta to absorb the sauce.
09 -
Return baked meatballs to the skillet, carefully folding them into the sauce and pasta. Warm gently until everything is heated through.
10 -
Top servings with extra Parmigiano Reggiano and fresh parsley if desired. Serve immediately while hot.