Let’s start with the Crepes:

1. Combine Ingredients in a Blender: The easiest way to get a perfectly smooth crepe batter is by using a blender. Add all the crepe ingredients – the all-purpose flour, whole milk, water, large eggs, melted unsalted butter, granulated sugar, vanilla extract, and salt – into a large mixing bowl or directly into your blender.
2. Blend Until Smooth: Cover the blender and start blending on low speed. Gradually increase the speed until all the ingredients are thoroughly mixed and the batter is completely smooth. This should only take about 30-60 seconds. A smooth batter is essential for thin, delicate crepes without any lumps.
3. Refrigerate the Batter (Resting Period): Pour the crepe batter into an airtight container. This resting period is crucial! Place the container in the refrigerator for at least one hour, and up to overnight. Resting the batter allows the gluten in the flour to relax, resulting in more tender crepes. It also allows any air bubbles to dissipate, leading to a smoother crepe batter that cooks more evenly. If you are short on time, even 30 minutes of resting will make a difference, but an hour or more is ideal. You can even prepare the batter the night before for an even quicker brunch in the morning!

Next, prepare the Cream Cheese Filling while the batter rests:

1. Beat Cream Cheese, Sugar, and Vanilla: In a large mixing bowl, add the softened cream cheese, granulated sugar, and vanilla extract. Using an electric mixer (hand mixer or stand mixer) or even a sturdy whisk, beat these ingredients together until the mixture is completely smooth and creamy. Ensure there are no lumps of cream cheese remaining. Softened cream cheese is key here for a smooth filling.
2. Whip the Heavy Cream: In a separate large bowl, pour in the heavy whipping cream. Using a clean electric mixer or whisk, whip the heavy cream until stiff peaks form. This means when you lift the whisk or beaters, the whipped cream holds its shape and stands up firmly. Be careful not to overwhip, or it will become grainy.
3. Fold Whipped Cream into Cream Cheese Mixture: Gently fold the whipped cream into the cream cheese mixture. Folding is a technique where you gently combine ingredients without deflating the whipped cream. Use a spatula and cut down through the center of the bowl, then bring the spatula up the side, turning the bowl slightly. Repeat this motion until the whipped cream is just incorporated into the cream cheese mixture and the filling is smooth and light.
4. Refrigerate Filling: Cover the bowl with plastic wrap and refrigerate the cream cheese filling until you’re ready to assemble the crepes. This allows the filling to firm up slightly and makes it easier to work with.

Finally, make the Berry Sauce:

1. Combine Berry Sauce Ingredients: In a small saucepan or bowl, combine the mixed berries, granulated sugar, and cornstarch. Gently stir to coat the berries evenly with the sugar and cornstarch. The cornstarch will act as a thickening agent for the sauce.
2. Heat and Simmer the Berries: Place the saucepan over medium-low heat. Cook the berry mixture, stirring occasionally, until the berries begin to release their juices and the sauce starts to thicken. This usually takes about 5-10 minutes. You’ll notice the sugar dissolving and the berries softening. Continue to simmer gently until the sauce reaches your desired consistency. If you prefer a thicker sauce, simmer for a bit longer.
3. Set Aside to Cool: Once the berry sauce has thickened to your liking, remove it from the heat and set it aside to cool slightly. The sauce will thicken further as it cools. You can make the berry sauce ahead of time and reheat it gently before serving if needed.

Cooking the Crepes and Assembling:

1. Heat a Nonstick Skillet: Place a large nonstick skillet or crepe pan over medium heat. Allow the pan to heat up completely. A hot pan is essential for preventing the crepes from sticking.
2. Grease the Pan: Lightly spray the hot skillet with nonstick cooking spray or brush with a little melted butter. You only need to grease the pan for the first crepe; subsequent crepes usually won’t require additional greasing due to the butter in the batter.
3. Pour and Swirl Batter: Pour about 1/4 cup of crepe batter into the center of the hot skillet. Immediately swirl the pan in a circular motion to spread the batter thinly and evenly across the bottom of the pan, creating a thin, round crepe. Work quickly, as the batter will start to set almost immediately.
4. Cook the First Side: Cook the crepe for about 1 minute, or until the edges start to look slightly crisp and golden brown, and the top surface appears set and no longer wet. You may see small bubbles forming on the surface, which is normal.
5. Flip and Cook the Second Side: Carefully flip the crepe using a thin spatula. Cook the second side for another 20-30 seconds, until it’s lightly golden brown. Crepes cook very quickly, so keep a close eye on them to prevent burning.
6. Stack and Cover: Gently remove the cooked crepe from the skillet and stack it on a plate. Cover the stack of crepes with a clean kitchen towel or aluminum foil to keep them warm and soft while you cook the remaining crepes. Repeat steps 2-6 with the remaining batter. You should get approximately 12 crepes from this recipe.
7. Fill and Roll: Once all the crepes are cooked, it’s time to assemble! Take one crepe and place it flat on a plate. Spoon about 1/4 cup of the cream cheese filling down the center of the crepe. Top with about 2 tablespoons of the berry sauce.
8. Roll Up and Serve: Gently roll up the crepe, starting from one edge and rolling it tightly to the opposite edge. You can also fold them into quarters if you prefer. Repeat with the remaining crepes, filling, and berry sauce. Serve immediately and enjoy!