1. Make four circles on the dough with a cooking tool.
2. Cut out the circles of the dough.
3. Bake them for 10 minutes on a frying pan/ on an oven.
(Are the expressions grammatical?)
1. ... with a cookie cutter.
(sometimes also referred to as biscuit cutters)
2. Cut the circles out of the dough.
3. Bake... in an oven.
http://www.google.com/search?q=biscuit+cutters&hl=en&rlz=1C1GGGE_enUS379US379&prmd=imvnse&source=lnms&tbm=isch&ei=4MCZT56mHYWC8QS1rKX4BQ&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CIQBEPwFKAE&biw=1366&bih=643
Various sizes and shapes!
The expressions you've provided are not grammatically correct. Here's a corrected version:
1. Use a cooking tool to create four circles on the dough.
2. Cut out the circles from the dough.
3. Place them on a frying pan or in an oven and bake for 10 minutes.
When writing instructions like these, it's important to use clear and concise language. It's also helpful to provide more specific details such as the size of the circles or the temperature for baking.