Easy DIY cupcake liners with parchment paper: the method to try right now You feel like making muffins but you don't have the right cups? We got this! Try this easy trick, you'll only need some parchment paper. PROCEDURE: 1. Cut some squares of parchment paper, approximately 12x12 cm and fold them in four. 2. Cut along the folds without reaching the center. 3. Push towards the center with a glass and place the oven paper inside the muffin moulds. 4. Pour the batter into the cups you just created