Peanut Butter and Jelly Donut Sandwiches

INGREDIENTS

• 1 teaspoon ground cinnamon
• 3/4 cup cornstarch
• 1/4 to 1/2 cup peanut butter
• 41/2 teaspoons baking powder
• 12 ounces carbonated energy drink (recommended: Red Bull) or seltzer water, for carbonation
• 4 to 6 teaspoons grape jelly (or your choice of jelly, jam, or preserves)
• 2 tablespoons sugar
• 1 quart canola oil (approximately, as needed for deep-frying)
• 1 1/2 cups all-purpose flour
• 8 slices white bread (or your choice of cinnamon swirl, raisin, apple, etc.)