Crockpot Ravioli

With school back in full swing, I have been trying to find meal ideas that are quick or don't require much attention.  Last week I tried Crockpot Ravioli from Recipe Me.  The first time I try a recipe I follow the directions the best I can, then see what adjustments need to be made.  This time I added 1/2 jar of spaghetti sauce after I tried it, because it was just not saucy at all.  And during dinner I just kept thinking that I needed ricotta to add in.  So here is my newly adapted recipe:

Into the crockpot:
1 lb ground beef, browned and drained
1 onion, chopped
3 cloves garlic, pressed
2 (15 oz) cans tomato sauce
2 (15 oz) cans petite diced tomatoes
2 t oregano
2 t Italian seasoning
2 t garlic powder
salt and pepper to taste

Add-ins once you get home:
10 oz frozen spinach (thawed and all liquid removed) or fresh
16 oz bowtie pasta, cooked
1/2 c Parmesan cheese
1 1/2 c mozzarella, shredded
1/2 to 1 container ricotta (depending on how much you like ricotta)