Beefy Cheese Spirals

2-3 cups uncooked spiral pasta
1-1 1/2 lbs. Hamburger
1 jar Spaghetti Sauce
1/2-1 cup sour cream
2 1/2 - 3 cups mozzarella cheese, shredded

Cook pasta in boiling water until tender. Brown hamburger and drain. Add spaghetti sauce and let simmer for 5 mins. Spray 9x13 pan with Pam. Put half the pasta in pan. Top with half the meat sauce mixture. Dollop sour cream by spoonfuls around the meat mixture. Sprinkle with half the mozzarella cheese. Spread the rest of pasta, meat sauce, and cheese on top of the first layer. Cover and bake 350 for 30 mins.