Slow Cooker Marinara Sauce

cans crushed tomatoes

cans diced tomatoes

garlic cloves (minced (or about 3 tbs already minced garlic))

large onion (chopped)

oregano, dried

basil, dried (I also use fresh when I have some from the garden))

red pepper flakes (more or less depending on the level of spice you'd like)

salt

pepper