Meanwhile, in food processor, place roasted peppers, basil, and garlic. Cover; process until finely chopped. Add cream cheese; cover and process until a smooth spread, scraping down sides as needed.
Cut cooled focaccia in half lengthwise to make 2 (12x4-inch) pieces. Spread bottom of each focaccia piece with half of red pepper spread. Top 1 piece with single layer of tomatoes and the spinach. Layer turkey evenly over spinach. Place remaining focaccia piece, spread side down, over turkey; press lightly.
With long serrated knife, cut into 6 rows crosswise by 2 rows lengthwise to make 12 square sandwiches. Secure each sandwich through all layers with toothpick.
Use purchased focaccia bread, if you'd prefer. Some purchased focaccia breads are round, so the number of appetizers will vary.
A mini food processor, immersion blender, or blender works well to make the red pepper sauce, too.
You can use fresh basil leaves instead of the fresh spinach.
