Many blog posts recommend making an extra meal each time you cook and freezing the extra one. I've found many blog sites with great recipes and ideas for meals. Here are a few to get you started.
Freezing Tips
Slow Cooker Meals
Crockpot Meals from Saving You Dinero
Meals and Links from Living Well Spending Less
Food Network Slow Cooker Recipes
Ashley Noel Barnes Freezer to Crockpot
The Realistic Organizer Freezer Meals
Or baked casseroles make good freezer meals
Martha Stewart Sausage and Bean Casserole
Martha Stewart chicken-tetrazzini
Another idea to save time is Batch Cooking