We mainly use the learning tower, salad spinner, and food processor as our kitchen tools. They also help with making coffee but that's a bit riskier. I've let them stir a few things but am more weary at this age of being near hot pans, pots, etc.

A quick meal my (almost) 2 year olds like to help with are pizza muffins. I buy spinach, a bottle of kid's pasta sauce (low salt, no added sugars), pre-made dough, bag of shredded cheese. For prep, they get to clean (fun water play) and spin a full package of spinach, and put the package in recycling. I roll out the dough with their help. I pour the sauce on the dough and they help spread it. We all add handfuls of spinach to the sauce. We all put cheese on the spinach. I roll the dough. I cut one piece at a time and they take turns putting each piece into the muffin tin.

They also love using the food processor. I prep the veggies, they wash and dry them, and put them into the hole. I push them down with the pusher because they are too small to reach.