Here's a vegetarian Memorial Day dessert recipe for an American flag fruit pizza using blue and red colors:

Ingredients:

• 1 dry pint fresh Blueberries
• 12 oz fresh Raspberries
• 2/3 cup Sugar
• 1 tube Refrigerated Sugar cookie dough
• 8 oz Whipped Topping
• 1 tsp Vanilla
• 8 oz Cream cheese (vegetarian-friendly)

Instructions:

1. Preheat your oven according to the instructions on the sugar cookie dough package.

2. Roll out the refrigerated sugar cookie dough onto a greased baking sheet or pizza pan, forming a large rectangle or circle. Follow the package instructions for baking time and temperature, but adjust the baking time if needed to ensure a soft, slightly undercooked crust.

3. While the sugar cookie crust is baking, prepare the cream cheese mixture. In a mixing bowl, combine the cream cheese, sugar, and vanilla. Mix well until smooth and creamy.

4. Once the sugar cookie crust has cooled completely, spread the cream cheese mixture evenly over the crust, leaving a small border around the edges.

5. Arrange the fresh blueberries in a rectangular shape in the upper left corner of the cream cheese layer to represent the blue field of stars on the American flag.

6. Use the fresh raspberries to create stripes, alternating between rows of raspberries and rows of whipped topping until you have filled the entire cream cheese layer, leaving the blueberry section untouched to maintain the blue color.

7. Optional: If desired, you can add additional whipped topping around the edges of the fruit pizza to create a border.

8. Refrigerate the fruit pizza for at least 1-2 hours to allow the flavors to meld and the cream cheese layer to set.

9. Once chilled, cut the fruit pizza into slices or squares and serve as a delicious and patriotic Memorial Day dessert.

Enjoy your vegetarian-friendly American flag fruit pizza!