DD prefers jars too. She never liked my cooking
What I do now (she's 11 months old) is that for meats, I'll give her the jar type of food, but for veggies I steam them and she eats them all right. And if she is interested, she can get whatever I have in my dish unless its a food that might cause her an allergy.
Still, she prefers the canned baby carrots to the steamed baby carrots
.... it definetly has to do with texture.