Which food has less impact on blood sugar?

FILLING: POTATOES, SWEET EARTH TUSCAN SAVORY GROUNDS (VITAL WHEAT GLUTEN, WATER, NON-GMO SOY SAUCE [WATER, SOYBEANS, WHEAT, SALT, ALCOHOL*], ONION, GARLIC, NUTRITIONAL YEAST*, KALE, SPICES, FLAXSEED, PARSLEY, FENNEL SEED, EXTRA VIRGIN OLIVE OIL, RED BELL PEPPER, VEGAN PORK FLAVOR, NATURAL HICKORY SMOKE), MONTEREY JACK CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, VEGETABLE ENZYMES), TOMATOES, SAUTEED ONION (ONION, CANOLA OIL, SALT, CITRIC ACID, ASCORBIC ACID), RED BELL PEPPER PUREE, KALE, GREEN OLIVES (OLIVES, WATER, SALT, LACTIC ACID), PICKLED PEPPERS, (BANANA PEPPERS, WATER, SEA SALT, VINEGAR, CITRIC ACID, TURMERIC), SMOKED PAPRIKA, TOMATO PASTE, DEHYDRATED ONION, NON-GMO EXPELLER PRESSED CANOLA OIL, GRANULATED GARLIC, SEA SALT, SPICES. PASTRY: WATER, WHOLE WHEAT FLOUR, UNSALTED BUTTER (PASTEURIZED CREAM, SALT, LACTIC ACID), ENRICHED PASTRY FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, VITAMIN B1, VITAMIN B2, FOLIC ACID), ENRICHED BREAD FLOUR, (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, VITAMIN B1, VITAMIN B2, FOLIC ACID), VITAL WHEAT GLUTEN, SEA SALT, BAKER'S YEAST, DEACTIVATED YEAST, NON-GMO EXPELLER PRESSED CANOLA OIL, WHEY, SOY FLOUR, EGG WHITES.