For the berry compote: In a small saucepan, combine the frozen berries, water and sugar. Bring the mixture to a simmer over medium heat, stirring occasionally. Cook for 5-8 minutes, or until the berries have broken down and released their juices. Use the back of a spoon to gently mash some of the berries if desired.
Continue cooking for 1-2 minutes until slightly thickened. The compote will thicken a bit more as it cools. Remove from the heat and let cool while you make the pancakes.
For the pancakes: In a medium bowl or large measuring cup, whisk together the ricotta cheese, buttermilk, eggs and vanilla.
In a large bowl, whisk together the gluten-free flour, sugar, baking powder and salt.
Add the wet ingredients to the dry and mix until just combined. The batter will be lumpy—don't overmix!
Preheat a griddle to 325°F. (Or preheat a nonstick pan over medium-high heat for a few minutes. You may need to add some oil to cook the pancakes if using a skillet.) Add a pat of butter to the skillet and let it melt until it starts to sizzle.
Scoop out 3-tablespoon-sized portions of batter onto the hot griddle or pan. Cook for about 2-3 minutes or until the edges are set and the first side is golden brown. Flip the pancake and cook for another 1-2 minutes until cooked through. Repeat with the remaining batter.
Serve topped with the berry compote and fresh whipped cream. Enjoy!