Preheat the oven to 180C/350F/Gas Mark 4.
Prepare square baking tin (20cm/8inch) by lining it with baking paper slightly overlapping for easier cookie bars removal later.
In a large bowl mix together softened plant butter and sugars until light and fluffy. Add plant milk and vanilla extract and mix them in too. 100 g caster sugar, 75 g light brown sugar, 100 g unsalted plant block butter, 1 tablespoon plant milk, 1 teaspoon vanilla extract
Sift in the flour(s) and baking agents, add salt (if using) and give it a mix with a wooden spoon until dough starts coming together.
200 g plain (all-purpose) flour, 1 teaspoon cornflour (cornstarch), ½ teaspoon baking powder, ½ teaspoon baking soda, pinch of salt
Add chocolate chips or finely chopped chocolate and mix it in. You will get a nice and stiff cookie dough.Quick Tip: You might find it easier to use your hand instead of a spoon as you incorporate chocolate into the dough. 100-120 g dark chocolate chips
Put cookie dough into prepared tin and press it firmly with your hand so that it fills the bottom of the tin nice and even. Top the cookie dough with some evenly distributed mini eggs, pressing them ever so gently into the dough.Quick Tip: Don't press mini eggs too hard into the dough as you want to be able to see them once cookie bars have risen during baking. 75 g (one bag) of vegan mini eggs
Bake in preheated oven for approximately 17 minutes for soft and chewy cookie bars or slightly longer if you prefer them a bit crispier.
Once out of the oven, let them stand in the tin for 10 minutes before removing onto cooling rack to cool completely before cutting into squares.
Enjoy!