She's right. I made all my daughters baby food. It's very simple.
All it takes is a little effort. The rewards are great though. My daughter loves the tastes of natural foods..fruits and vegetables. She still turns her nose up at boxed, canned or prepared foods, and she loves a wide variety of foods.
It usually takes one day dedicated to baby food making a month.
The easier to make are fruits, carrots, and sweet potatoes. I had a hard time with peas and greenbeans, I ended up buying gerber for those.
Some of our favorites were
apple/pear and blueberry
1/2 bag of apples of your choice (I liked gala or mcintosh)
2 pears
and a cup of blueberries (fresh or frozen let thaw)
peel, and wash apples and pears (no seeds duh

boil in water until soft. Drain. Blend with blueberries. In blender mix half of the mixture, slowly adding filtered water until it becomes thin enough to puree. puree until smooth. Baby food consistency. Be careful not to fill mixer too full, thats why I do half at a time.
Mix other half of mixture.
pour into icecube trays, freeze solid, then transfer the cubes into freezer bags. Mark and date (this is important). I popped one in the microwave for a few seconds being careful not to boil or overcook before feeding. I also bought seperate trays for freezing food.
apple/banana
1/2bag of apples
and 4 bananas
follow as above, but don't boil bananas
Sweet potato/carrot or you make potatoes and carrots seperate too.
2 sweet potatoes no skin.
half bag of whole carrots peeled and cut.
follow same as above only boil veggies in water. Potatoes are more starchy so you will have to add alot more filtered water in blender. This goes a long way.
Never add sugar or salt. And you can pretty much turn anything into baby food. When they get older, you can add little salts like with chicken & rice mushed up, or chopped corn and potatoes. You can invent alot.
Because these foods don't have preservatives, you may notice discoloration after thawing, especially with bananas. It doesn't mean it's gone bad. You'll save alot of $ on baby foods, and it tastes better too.
Hope that helps get you started anyway.