In a large fry pan on a high heat, cook your baby spinach with a pinch of salt and pepper until it has wilted entirely. Transfer to a colander and drain out as much liquid as possible. Set to the side to cool and then roughly chop.
Combine all ingredients into a large bowl and mix well with a large spoon. Keep your filling covered in the fridge until ready to use.
Ravioli
In a large mixing bowl, mix together the white 00 flour, semolina and salt. Place the flour onto a pasta board or clean surface and make a well in the middle of the flour with your fist or the bottom of your mixing bowl that is deep and wide enough to hold the eggs.
Place your eggs into the middle of the flour well and whisk together with a fork. When you’re whisking your eggs, slowly combine the flour from the edges of where the eggs are sitting and whisk through with the eggs until a thick, custard-like paste forms. When you can no longer whisk the flour and egg with a fork, bring the flour from the edges into the well with your hands or a pasta scraper and begin to knead the dough into a ball.
Knead the dough for 10 minutes until a firm smooth dough ball forms that is moist and not sticky. Every dough is different so you will need to go by feel.
Place your dough into a bowl and cover well with plastic wrap or a damp towel. Leave to rest for a minimum of 30 minutes.
Uncover your dough and cut off a quarter piece. Cut that piece in half and keep the rest of the dough covered so it does not dry out. Place your dough onto a lightly floured pasta board or bench surface. Roll the dough out with a rolling pin into a rectangular shape that is 3mm thick. Roll the dough through a pasta machine on the widest setting (number 7 on my pasta machine). Fold the dough in half and roll it through again. Roll the dough through a narrower setting twice and fold the dough in half for the second time (number 4 or 5 on my pasta machine). Finally, roll the dough on the second narrowest setting (number 2 on my pasta machine) until you have a long rectangular pasta sheet that is roughly 10cm wide. Dust the pasta sheet with flour, cover with a towel and set to the side while you repeat this step with the remainder of the dough.
Place your ravioli filling into a piping bag. If you don’t have a piping bag you can simply spoon the filling onto the ravioli sheets for this step. Starting from the edge of the pasta sheet leaving a 5cm boarder, begin to pipe a 20cent piece of filling into the centre, leaving a 5cm gap between each piece of filling. Pipe along the entirety of the pasta sheet until there is no more space.
Wet your index finger with water and dampen the boarder of the dough and in between the filling. Use a second piece of pasta sheet and lay over the pasta sheet with the filling. Press firmly around the edges and in between the filling to remove any air bubbles. I use a small shot glass that I place over the filling to help shape it into a nice circle shape and help to remove air bubbles.
Using a ravioli cutter, cut your ravioli shapes around the filling. I cut mine into large squares. Try and make them the same size so they cook evenly.
Place your ravioli onto a baking tray that has been lightly floured with semolina flour and cover with a towel as you continue to make the remainder of ravioli.
Lemon and butter sauce
In a pot of heavily salted water, cook your ravioli until the begin to rise to the top.
In a large fry pan on a medium heat, melt the butter. When the butter starts to foam, add in the lemon zest and pinch of salt. Swirl around in the pan for 1 - 2 minutes and then add the cooked ravioli into the sauce with a slotted spoon ensuring some pasta water is added to the sauce. Turn the heat to low and cook for 1 minute. Finish with a squeeze of lemon juice and sprinkling of parmeson.
Notes
Please note, the lemon and butter sauce is only for two servings of ravioli (12 pieces).